625988984 has 32 divisors (see below), whose sum is σ = 1207664640. Its totient is φ = 304012800.

The previous prime is 625988981. The next prime is 625989019. The reversal of 625988984 is 489889526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625988981) by changing a digit.

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, 72329 + ... + 80519.

It is an arithmetic number, because the mean of its divisors is an integer number (37739520).

Almost surely, 2^625988984 is an apocalyptic number.

It is an amenable number.

625988984 is a deficient number, since it is larger than the sum of its proper divisors (581675656).

625988984 is a wasteful number, since it uses less digits than its factorization.

625988984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8471 (or 8467 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 59.

The square root of 625988984 is about 25019.7718614699. The cubic root of 625988984 is about 855.4387060397.

The spelling of 625988984 in words is "six hundred twenty-five million, nine hundred eighty-eight thousand, nine hundred eighty-four".