625878816 has 24 divisors (see below), whose sum is σ = 1642932144. Its totient is φ = 208626240.

The previous prime is 625878797. The next prime is 625878833. The reversal of 625878816 is 618878526.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3259690 + ... + 3259881.

It is an arithmetic number, because the mean of its divisors is an integer number (68455506).

Almost surely, 2^625878816 is an apocalyptic number.

It is an amenable number.

625878816 is an abundant number, since it is smaller than the sum of its proper divisors (1017053328).

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

625878816 is a wasteful number, since it uses less digits than its factorization.

625878816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6519584 (or 6519576 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 51.

The square root of 625878816 is about 25017.5701457995. The cubic root of 625878816 is about 855.3885201190.

The spelling of 625878816 in words is "six hundred twenty-five million, eight hundred seventy-eight thousand, eight hundred sixteen".