525631 has 6 divisors (see below), whose sum is σ = 538232. Its totient is φ = 513300.

The previous prime is 525607. The next prime is 525641. The reversal of 525631 is 136525.

It is a happy number.

It is not a de Polignac number, because 525631 - 2⁵ = 525599 is a prime.

It is a super-2 number, since 2×525631² = 552575896322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3406 + ... + 3556.

2⁵²⁵⁶³¹ is an apocalyptic number.

525631 is a deficient number, since it is larger than the sum of its proper divisors (12601).

525631 is an equidigital number, since it uses as much as digits as its factorization.

525631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 210 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 525631 is about 725.0041379192. The cubic root of 525631 is about 80.7037391543.

It can be divided in two parts, 525 and 631, that added together give a square (1156 = 34²).

The spelling of 525631 in words is "five hundred twenty-five thousand, six hundred thirty-one".