631653825 has 48 divisors (see below), whose sum is σ = 1170121536. Its totient is φ = 297964800.

The previous prime is 631653811. The next prime is 631653857. The reversal of 631653825 is 528356136.

It is not a de Polignac number, because 631653825 - 2⁵ = 631653793 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20179 + ... + 40871.

It is an arithmetic number, because the mean of its divisors is an integer number (24377532).

Almost surely, 2^631653825 is an apocalyptic number.

It is an amenable number.

631653825 is a deficient number, since it is larger than the sum of its proper divisors (538467711).

631653825 is a wasteful number, since it uses less digits than its factorization.

631653825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20754 (or 20749 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 631653825 is about 25132.7241858100. The cubic root of 631653825 is about 858.0113709568.

It can be divided in two parts, 631 and 653825, that added together give a palindrome (654456).

The spelling of 631653825 in words is "six hundred thirty-one million, six hundred fifty-three thousand, eight hundred twenty-five".