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| Cardinal | one hundred twenty-five | |||
| Ordinal | 125th (one hundred and twenty-fifth) |
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| Factorization | 53 | |||
| Divisors | 1, 5, 25, 125 | |||
| Roman numeral | CXXV | |||
| Binary | 11111012 | |||
| Ternary | 111223 | |||
| Quaternary | 13314 | |||
| Quinary | 10005 | |||
| Senary | 3256 | |||
| Octal | 1758 | |||
| Duodecimal | A512 | |||
| Hexadecimal | 7D16 | |||
| Vigesimal | 6520 | |||
| Base 36 | 3H36 | |||
125 (ones hundred [and] twenty-five) is the natural number following 124 and preceding 126.
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.
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: