125812431 has 12 divisors (see below), whose sum is σ = 181871040. Its totient is φ = 83809440.

The previous prime is 125812409. The next prime is 125812441. The reversal of 125812431 is 134218521.

It is not a de Polignac number, because 125812431 - 2⁷ = 125812303 is a prime.

It is a super-2 number, since 2×125812431² = 31657535588259522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125812395 and 125812404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125812441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8610 + ... + 18048.

It is an arithmetic number, because the mean of its divisors is an integer number (15155920).

Almost surely, 2^125812431 is an apocalyptic number.

125812431 is a deficient number, since it is larger than the sum of its proper divisors (56058609).

125812431 is a wasteful number, since it uses less digits than its factorization.

125812431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10926 (or 10923 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 125812431 is about 11216.6140612932. The cubic root of 125812431 is about 501.0809029471.

It can be divided in two parts, 1258 and 12431, that added together give a square (13689 = 117²).

The spelling of 125812431 in words is "one hundred twenty-five million, eight hundred twelve thousand, four hundred thirty-one".