625625631875 has 10 divisors (see below), whose sum is σ = 781781790372. Its totient is φ = 500500505000.

The previous prime is 625625631859. The next prime is 625625631901. The reversal of 625625631875 is 578136526526.

It is not a de Polignac number, because 625625631875 - 2⁴ = 625625631859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 625625631875.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 500499881 + ... + 500501130.

Almost surely, 2^625625631875 is an apocalyptic number.

625625631875 is a deficient number, since it is larger than the sum of its proper divisors (156156158497).

625625631875 is an equidigital number, since it uses as much as digits as its factorization.

625625631875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001001031 (or 1001001016 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 56.

The spelling of 625625631875 in words is "six hundred twenty-five billion, six hundred twenty-five million, six hundred thirty-one thousand, eight hundred seventy-five".