631525893 has 16 divisors (see below), whose sum is σ = 871612416. Its totient is φ = 406303920.

The previous prime is 631525891. The next prime is 631525919. The reversal of 631525893 is 398525136.

It is not a de Polignac number, because 631525893 - 2¹ = 631525891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631525891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24880 + ... + 43382.

It is an arithmetic number, because the mean of its divisors is an integer number (54475776).

Almost surely, 2^631525893 is an apocalyptic number.

It is an amenable number.

631525893 is a deficient number, since it is larger than the sum of its proper divisors (240086523).

631525893 is a wasteful number, since it uses less digits than its factorization.

631525893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18904.

The product of its digits is 194400, while the sum is 42.

The square root of 631525893 is about 25130.1789289293. The cubic root of 631525893 is about 857.9534412714.

The spelling of 631525893 in words is "six hundred thirty-one million, five hundred twenty-five thousand, eight hundred ninety-three".