639583325 has 12 divisors (see below), whose sum is σ = 793535520. Its totient is φ = 511374960.

The previous prime is 639583319. The next prime is 639583337. The reversal of 639583325 is 523385936.

It is a happy number.

639583325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 639583325 - 2¹² = 639579229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44702 + ... + 57248.

It is an arithmetic number, because the mean of its divisors is an integer number (66127960).

Almost surely, 2^639583325 is an apocalyptic number.

It is an amenable number.

639583325 is a deficient number, since it is larger than the sum of its proper divisors (153952195).

639583325 is a wasteful number, since it uses less digits than its factorization.

639583325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14596 (or 14591 counting only the distinct ones).

The product of its digits is 583200, while the sum is 44.

The square root of 639583325 is about 25289.9846777336. The cubic root of 639583325 is about 861.5868147707.

The spelling of 639583325 in words is "six hundred thirty-nine million, five hundred eighty-three thousand, three hundred twenty-five".