631887625 has 16 divisors (see below), whose sum is σ = 822886272. Its totient is φ = 483529200.

The previous prime is 631887589. The next prime is 631887631. The reversal of 631887625 is 526788136.

631887625 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 631887625 - 2¹⁷ = 631756553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107019 + ... + 112768.

It is an arithmetic number, because the mean of its divisors is an integer number (51430392).

Almost surely, 2^631887625 is an apocalyptic number.

It is an amenable number.

631887625 is a deficient number, since it is larger than the sum of its proper divisors (190998647).

631887625 is a wasteful number, since it uses less digits than its factorization.

631887625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219825 (or 219815 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 631887625 is about 25137.3750618476. The cubic root of 631887625 is about 858.1172191843.

The spelling of 631887625 in words is "six hundred thirty-one million, eight hundred eighty-seven thousand, six hundred twenty-five".