125 (one hundred ndtwenty-five) is the

natural number In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country"). Numbers used for counting are called ''Cardinal n ...

following 124 and preceding 126.

In mathematics

125 is the

cube In geometry, a cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. Viewed from a corner it is a hexagon and its net is usually depicted as a cross. The cube is the only r ...

of 5. It can be expressed as a sum of two squares in two different ways, 125 = 10² + 5² = 11² + 2². 125 and 126 form a Ruth-Aaron pair under the second definition in which repeated

prime factor A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways ...

s are counted as often as they occur. Like many other powers of 5, it is a

Friedman number A Friedman number is an integer, which represented in a given numeral system, is the result of a non-trivial expression using all its own digits in combination with any of the four basic arithmetic operators (+, −, ×, ÷), additive inverses, p ...

in base 10 since 125 = 5^{1 + 2}. 125 is the center of a close triplet of

perfect power In mathematics, a perfect power is a natural number that is a product of equal natural factors, or, in other words, an integer that can be expressed as a square or a higher integer power of another integer greater than one. More formally, ''n'' ...

s, (121 = 11², 125 = 5³, 128 = 2⁷). Excluding the trivial cases of 0 and 1, the only closer such triplet is (4,8,9) and the only other equally close is (25, 27, 32).

U.S. military

* Air National Guard

125th Special Tactics Squadron The 125th Special Tactics Squadron is a special operations force unit serving as part of the 142nd Fighter Wing of the United States Air National Guard. They are based at the Portland Air National Guard Base in Portland, Oregon. Mission The sq ...

unit in Portland, Oregon * US Air Force 125th Fighter Wing, Air National Guard unit at Jacksonville International Airport, Florida * US Navy

VAW-125 Airborne Command & Control Squadron 125 (VAW-125), known as the "Torch Bearers" or "Tigertails", was established on 1 October 1968, at Naval Air Station Norfolk. The squadron's initial supporting command was Carrier Air Wing Three (CVW-3) depl ...

squadron at Naval Station Norfolk, Virginia * US Navy

VFA-125 Strike Fighter Squadron 125 (VFA-125), also known as the "Rough Raiders", is a United States Navy strike fighter squadron based at Naval Air Station Lemoore, California. The "Rough Raiders" are a Fleet Replacement Squadron flying the F-35C L ...

strike fighter squadron at

Naval Air Station Lemoore Naval Air Station Lemoore or NAS Lemoore is a United States Navy base, located in Kings County and Fresno County, California, United States. Lemoore Station, a census-designated place, is located inside the base's borders. NAS Lemoore is the Na ...

, California * , a US Navy fleet oiler during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

* , a US Navy minesweeper * Northrop

YC-125 Raider The Northrop YC-125 Raider was a 1940s American three-engined STOL utility transport built by Northrop Corporation, Hawthorne, California. Design and development Northrop's first postwar civil design was a three-engined STOL passenger and carg ...

utility transport plane

In transportation

* The

Fiat 125 The Fiat 125 is a large family car manufactured and marketed by Italian company Fiat from 1967 to 1972. Derivatives were built under license outside Italy until the 1990s. As launched the car was unusual in blending saloon car passenger accommod ...

automobile * Many motorcycle licenses and racing events limit engine capacity to 125cc. Examples of 125cc motorcycles include; ** The Honda XRM 125 motorcycle ** The

Yamaha YZ125 The Yamaha YZ125 is a motocross racing motorcycle with a two-stroke displacement single-cylinder engine made by Yamaha since 1974. It is available to the public. For the first two years it was made with dual rear shocks, then changing to a mon ...

, for motocross * The Harlem-125th Street (Metro-North) station serving Harlem, New York City * The

InterCity 125 The InterCity 125 (originally Inter-City 125New trai ...

, sometimes referred to simply as "one two five", a British high-speed train * New Jersey Transit bus route 125 *

London Buses route 125 This is a list of Transport for London (TfL) contracted bus routes in London, England, as well as commercial services that enter the Greater London area (except coaches). Bus services in London are operated by Abellio London, Arriva London, G ...

is a Transport for London contracted bus route in London * 125 is the number of many roads, including

Mexican Federal Highway 125 Federal Highway 125 ''(Carretera Federal No. 125)'' is a Federal Highway of Mexico that runs from Veracruz south across the Sierra Madre Oriental to just north of the Pacific Ocean in Oaxaca. Federal Highway 125 is split into three segments: the ...

Pan Am Flight 125 United Airlines Flight 811 was a regularly scheduled airline flight from Los Angeles to Sydney, with intermediate stops at Honolulu and Auckland. On February 24, 1989, the Boeing 747-122 serving the flight experienced a cargo-door failure in ...

from

London London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a majo ...

’s

Heathrow Airport Heathrow Airport (), called ''London Airport'' until 1966 and now known as London Heathrow , is a major international airport in London, England. It is the largest of the six international airports in the London airport system (the others be ...

New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...

John F. Kennedy International Airport John F. Kennedy International Airport (colloquially referred to as JFK Airport, Kennedy Airport, New York-JFK, or simply JFK) is the main international airport serving New York City. The airport is the busiest of the seven airports in the Ne ...

which had pressurization problems on March 10, 1987 * The

125th Street Bridge 1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length 1 ...

crosses the

Mississippi River The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it f ...

Minnesota Minnesota () is a state in the upper midwestern region of the United States. It is the 12th largest U.S. state in area and the 22nd most populous, with over 5.75 million residents. Minnesota is home to western prairies, now given over to ...

STS-125 STS-125, or HST-SM4 (Hubble Space Telescope Servicing Mission 4), was the fifth and final Space Shuttle mission to the Hubble Space Telescope (HST) and the last solo flight of the Space Shuttle Atlantis, Space Shuttle ''Atlantis''. The launch of ...

, a Space Shuttle ''Atlantis'' mission, the final mission to service the

Hubble Space Telescope The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versa ...

, launched May 11, 2009 at 2:01 pm EDT landed May 24, 2009 at 11:39:05 am EDT *

125 (dinghy) The 125 is a two person intermediate sailing dinghy complete with main, jib, spinnaker and trapeze. The 125 class has a strong following within Australia with national titles being held every year around the country and local state associations. ...

- a class of sailing dingy popular in Australia. *

EMD F125 The EMD F125 "Spirit" is a four-axle passenger diesel locomotive manufactured by Electro-Motive Diesel (EMD) for the North American market since 2015. It is powered by a Caterpillar C175-20 V20 diesel engine rated at . The locomotive is capable ...

locomotive manufactured by

Electro Motive Diesel Progress Rail Locomotives, doing business as Electro-Motive Diesel (EMD), is an American manufacturer of diesel-electric locomotives, locomotive products and diesel engines for the rail industry. The company is owned by Caterpillar through its sub ...

In other fields

125 is also: * The year

AD 125 __NOTOC__ Year 125 ( CXXV) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Paullinus and Titius (or, less frequently, year 878 ''Ab u ...

or 125 BC * 125 AH is a year in the

Islamic calendar The Hijri calendar ( ar, ٱلتَّقْوِيم ٱلْهِجْرِيّ, translit=al-taqwīm al-hijrī), also known in English as the Muslim calendar and Islamic calendar, is a lunar calendar consisting of 12 lunar months in a year of 354 or ...

that corresponds to

742 __NOTOC__ Year 742 ( DCCXLII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. The denomination 742 for this year has been used since the early medieval period, when the Anno Domini calendar era ...

–

743 __NOTOC__ Year 743 ( DCCXLIII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. The denomination 743 for this year has been used since the early medieval period, when the Anno Domini calendar ...

CE * 125 Liberatrix is a

Main belt The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars. It contains a great many solid, irregularly shaped bodies, of many sizes, but much smaller than planets, called ...

asteroid An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. ...

* The

atomic number The atomic number or nuclear charge number (symbol ''Z'') of a chemical element is the charge number of an atomic nucleus. For ordinary nuclei, this is equal to the proton number (''n''p) or the number of protons found in the nucleus of every ...

of the yet-to-be-discovered element

unbipentium An extended periodic table theorises about chemical elements beyond those currently known in the periodic table and proven. , the element with the highest atomic number known is oganesson (''Z'' = 118), which completes the seventh period (row ...

* Sonnet 125 by

William Shakespeare William Shakespeare ( 26 April 1564 – 23 April 1616) was an English playwright, poet and actor. He is widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist. He is often called England's nation ...

* 125th Street,

Manhattan Manhattan (), known regionally as the City, is the most densely populated and geographically smallest of the five boroughs of New York City. The borough is also coextensive with New York County, one of the original counties of the U.S. state ...

New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...

** 125th Street (New York City Subway), multiple subway stations *

CA-125 Mucin-16 (MUC-16) also known as Ovarian cancer-related tumor marker CA125 is a protein that in humans is encoded by the ''MUC16'' gene. MUC-16 is a member of the mucin family glycoproteins. MUC-16 has found application as a tumor marker or bioma ...

, also known as CA125, is an abbreviation for cancer

antigen In immunology, an antigen (Ag) is a molecule or molecular structure or any foreign particulate matter or a pollen grain that can bind to a specific antibody or T-cell receptor. The presence of antigens in the body may trigger an immune response. ...

125 *

125 High Street 125 High Street is a 30-floor postmodern highrise in the Financial District, Boston, Massachusetts, Financial District of Boston, Massachusetts. Standing 452 feet (138 m) tall, the highrise is currently the List of tallest buildings in Boston, 2 ...

is a 30-floor high-rise in

Boston Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- mo ...

References

{{DEFAULTSORT:125 (Number) Integers

In mathematics

U.S. military

In transportation

In other fields

See also

References