125615864 has 16 divisors (see below), whose sum is σ = 256941720. Its totient is φ = 57098080.

The previous prime is 125615863. The next prime is 125615869. The reversal of 125615864 is 468516521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125615863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713639 + ... + 713814.

Almost surely, 2^125615864 is an apocalyptic number.

It is an amenable number.

125615864 is an abundant number, since it is smaller than the sum of its proper divisors (131325856).

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

125615864 is a wasteful number, since it uses less digits than its factorization.

125615864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427470 (or 1427466 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 125615864 is about 11207.8483216004. The cubic root of 125615864 is about 500.8198070980.

The spelling of 125615864 in words is "one hundred twenty-five million, six hundred fifteen thousand, eight hundred sixty-four".