625656630 has 16 divisors (see below), whose sum is σ = 1501575984. Its totient is φ = 166841760.

The previous prime is 625656623. The next prime is 625656637. The reversal of 625656630 is 36656526.

It is an interprime number because it is at equal distance from previous prime (625656623) and next prime (625656637).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625656637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10427581 + ... + 10427640.

It is an arithmetic number, because the mean of its divisors is an integer number (93848499).

Almost surely, 2^625656630 is an apocalyptic number.

625656630 is an abundant number, since it is smaller than the sum of its proper divisors (875919354).

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

625656630 is a wasteful number, since it uses less digits than its factorization.

625656630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20855231.

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 625656630 is about 25013.1291525071. The cubic root of 625656630 is about 855.2872876104.

The spelling of 625656630 in words is "six hundred twenty-five million, six hundred fifty-six thousand, six hundred thirty".