125407431 has 24 divisors (see below), whose sum is σ = 195127296. Its totient is φ = 77386320.

The previous prime is 125407427. The next prime is 125407433. The reversal of 125407431 is 134704521.

It is not a de Polignac number, because 125407431 - 2² = 125407427 is a prime.

It is a super-2 number, since 2×125407431² = 31454047500039522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125407395 and 125407404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125407433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3355 + ... + 16188.

It is an arithmetic number, because the mean of its divisors is an integer number (8130304).

Almost surely, 2^125407431 is an apocalyptic number.

125407431 is a deficient number, since it is larger than the sum of its proper divisors (69719865).

125407431 is a wasteful number, since it uses less digits than its factorization.

125407431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19603 (or 19600 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 125407431 is about 11198.5459323968. The cubic root of 125407431 is about 500.5426521775.

The spelling of 125407431 in words is "one hundred twenty-five million, four hundred seven thousand, four hundred thirty-one".