125431512 has 32 divisors (see below), whose sum is σ = 327214080. Its totient is φ = 39992480.

The previous prime is 125431507. The next prime is 125431513. The reversal of 125431512 is 215134521.

It is a happy number.

It is a super-2 number, since 2×125431512² = 31466128405212288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125431513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113064 + ... + 114167.

It is an arithmetic number, because the mean of its divisors is an integer number (10225440).

Almost surely, 2^125431512 is an apocalyptic number.

125431512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125431512 is an abundant number, since it is smaller than the sum of its proper divisors (201782568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125431512 is a wasteful number, since it uses less digits than its factorization.

125431512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227263 (or 227259 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 125431512 is about 11199.6210650182. The cubic root of 125431512 is about 500.5746885464.

The spelling of 125431512 in words is "one hundred twenty-five million, four hundred thirty-one thousand, five hundred twelve".