625581616 has 30 divisors (see below), whose sum is σ = 1332273236. Its totient is φ = 284354400.

The previous prime is 625581611. The next prime is 625581617. The reversal of 625581616 is 616185526.

It is not an unprimeable number, because it can be changed into a prime (625581611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 159630 + ... + 163501.

Almost surely, 2^625581616 is an apocalyptic number.

It is an amenable number.

625581616 is an abundant number, since it is smaller than the sum of its proper divisors (706691620).

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

625581616 is a wasteful number, since it uses less digits than its factorization.

625581616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323161 (or 323144 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 625581616 is about 25011.6296150411. The cubic root of 625581616 is about 855.2531042784.

The spelling of 625581616 in words is "six hundred twenty-five million, five hundred eighty-one thousand, six hundred sixteen".