125913512 has 8 divisors (see below), whose sum is σ = 236087850. Its totient is φ = 62956752.

The previous prime is 125913499. The next prime is 125913533. The reversal of 125913512 is 215319521.

It can be written as a sum of positive squares in only one way, i.e., 121308196 + 4605316 = 11014^2 + 2146^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7869587 + ... + 7869602.

Almost surely, 2^125913512 is an apocalyptic number.

It is an amenable number.

125913512 is a deficient number, since it is larger than the sum of its proper divisors (110174338).

125913512 is a wasteful number, since it uses less digits than its factorization.

125913512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15739195 (or 15739191 counting only the distinct ones).

The product of its digits is 2700, while the sum is 29.

The square root of 125913512 is about 11221.1190172817. The cubic root of 125913512 is about 501.2150608624.

The spelling of 125913512 in words is "one hundred twenty-five million, nine hundred thirteen thousand, five hundred twelve".