125815668 has 24 divisors (see below), whose sum is σ = 320258400. Its totient is φ = 38125920.

The previous prime is 125815667. The next prime is 125815673. The reversal of 125815668 is 866518521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125815667) 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 7 ways as a sum of consecutive naturals, for example, 476443 + ... + 476706.

It is an arithmetic number, because the mean of its divisors is an integer number (13344100).

Almost surely, 2^125815668 is an apocalyptic number.

It is an amenable number.

125815668 is an abundant number, since it is smaller than the sum of its proper divisors (194442732).

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

125815668 is a wasteful number, since it uses less digits than its factorization.

125815668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953167 (or 953165 counting only the distinct ones).

The product of its digits is 115200, while the sum is 42.

The square root of 125815668 is about 11216.7583552468. The cubic root of 125815668 is about 501.0852003099.

The spelling of 125815668 in words is "one hundred twenty-five million, eight hundred fifteen thousand, six hundred sixty-eight".