625440642 has 16 divisors (see below), whose sum is σ = 1324462752. Its totient is φ = 196216640.

The previous prime is 625440623. The next prime is 625440653. The reversal of 625440642 is 246044526.

625440642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 3065784 + ... + 3065987.

It is an arithmetic number, because the mean of its divisors is an integer number (82778922).

Almost surely, 2^625440642 is an apocalyptic number.

625440642 is an abundant number, since it is smaller than the sum of its proper divisors (699022110).

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

625440642 is a wasteful number, since it uses less digits than its factorization.

625440642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6131793.

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 625440642 is about 25008.8112872243. The cubic root of 625440642 is about 855.1888560621.

The spelling of 625440642 in words is "six hundred twenty-five million, four hundred forty thousand, six hundred forty-two".