625634872 has 8 divisors (see below), whose sum is σ = 1173065400. Its totient is φ = 312817432.

The previous prime is 625634861. The next prime is 625634873. The reversal of 625634872 is 278436526.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625634873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39102172 + ... + 39102187.

It is an arithmetic number, because the mean of its divisors is an integer number (146633175).

Almost surely, 2^625634872 is an apocalyptic number.

It is an amenable number.

625634872 is a deficient number, since it is larger than the sum of its proper divisors (547430528).

625634872 is a wasteful number, since it uses less digits than its factorization.

625634872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78204365 (or 78204361 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The square root of 625634872 is about 25012.6942171370. The cubic root of 625634872 is about 855.2773729300.

The spelling of 625634872 in words is "six hundred twenty-five million, six hundred thirty-four thousand, eight hundred seventy-two".