625894644 has 24 divisors (see below), whose sum is σ = 1546328448. Its totient is φ = 196359040.

The previous prime is 625894631. The next prime is 625894663. The reversal of 625894644 is 446498526.

625894644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 625894593 and 625894602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1533852 + ... + 1534259.

It is an arithmetic number, because the mean of its divisors is an integer number (64430352).

Almost surely, 2^625894644 is an apocalyptic number.

It is an amenable number.

625894644 is an abundant number, since it is smaller than the sum of its proper divisors (920433804).

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

625894644 is a wasteful number, since it uses less digits than its factorization.

625894644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068135 (or 3068133 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 48.

The square root of 625894644 is about 25017.8864814756. The cubic root of 625894644 is about 855.3957307670.

The spelling of 625894644 in words is "six hundred twenty-five million, eight hundred ninety-four thousand, six hundred forty-four".