625503634520 has 64 divisors (see below), whose sum is σ = 1430906510880. Its totient is φ = 246053671936.

The previous prime is 625503634501. The next prime is 625503634529. The reversal of 625503634520 is 25436305526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625503634529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52982 + ... + 1119738.

Almost surely, 2^625503634520 is an apocalyptic number.

It is an amenable number.

625503634520 is an abundant number, since it is smaller than the sum of its proper divisors (805402876360).

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

625503634520 is a wasteful number, since it uses less digits than its factorization.

625503634520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067012 (or 1067008 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 41.

The spelling of 625503634520 in words is "six hundred twenty-five billion, five hundred three million, six hundred thirty-four thousand, five hundred twenty".