625798964 has 24 divisors (see below), whose sum is σ = 1259895168. Its totient is φ = 266421600.

The previous prime is 625798963. The next prime is 625798967. The reversal of 625798964 is 469897526.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625798963) 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, 69779 + ... + 78234.

It is an arithmetic number, because the mean of its divisors is an integer number (52495632).

Almost surely, 2^625798964 is an apocalyptic number.

It is an amenable number.

625798964 is an abundant number, since it is smaller than the sum of its proper divisors (634096204).

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

625798964 is a wasteful number, since it uses less digits than its factorization.

625798964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148175 (or 148173 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The square root of 625798964 is about 25015.9741765137. The cubic root of 625798964 is about 855.3521406648.

The spelling of 625798964 in words is "six hundred twenty-five million, seven hundred ninety-eight thousand, nine hundred sixty-four".