625392622164 has 24 divisors (see below), whose sum is σ = 1460026941408. Its totient is φ = 208353137440.

The previous prime is 625392622123. The next prime is 625392622177. The reversal of 625392622164 is 461226293526.

625392622164 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×625392622164² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13860282 + ... + 13905329.

It is an arithmetic number, because the mean of its divisors is an integer number (60834455892).

Almost surely, 2^625392622164 is an apocalyptic number.

It is an amenable number.

625392622164 is an abundant number, since it is smaller than the sum of its proper divisors (834634319244).

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

625392622164 is a wasteful number, since it uses less digits than its factorization.

625392622164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27767495 (or 27767493 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 48.

The spelling of 625392622164 in words is "six hundred twenty-five billion, three hundred ninety-two million, six hundred twenty-two thousand, one hundred sixty-four".