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# 125 (number)

 ← 124 125 126 →
Cardinalone hundred twenty-five
Ordinal125th
(one hundred twenty-fifth)
Factorization53
Divisors1, 5, 25, 125
Greek numeralΡΚΕ´
Roman numeralCXXV
Binary11111012
Ternary111223
Quaternary13314
Quinary10005
Senary3256
Octal1758
DuodecimalA512
Vigesimal6520
Base 363H36

125 (one hundred [and] twenty-five) is the natural number following 124 and preceding 126.

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## In mathematics

125 is the cube of 5. It can be expressed as a sum of two squares in two different ways, 125 = 10² + 5² = 11² + 2².[1]

125 and 126 form a Ruth-Aaron pair under the second definition in which repeated prime factors are counted as often as they occur.

Like many other powers of 5, it is a Friedman number in base 10 since 125 = 51 + 2.

125 is also: