631025 has 12 divisors (see below), whose sum is σ = 802032. Its totient is φ = 492240.

The previous prime is 631013. The next prime is 631039. The reversal of 631025 is 520136.

It is not a de Polignac number, because 631025 - 2¹² = 626929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 630994 and 631012.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 631025.

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, 782 + ... + 1368.

It is an arithmetic number, because the mean of its divisors is an integer number (66836).

2⁶³¹⁰²⁵ is an apocalyptic number.

It is an amenable number.

631025 is a deficient number, since it is larger than the sum of its proper divisors (171007).

631025 is a wasteful number, since it uses less digits than its factorization.

631025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 631025 is about 794.3708202093. The cubic root of 631025 is about 85.7726553483.

Subtracting from 631025 its reverse (520136), we obtain a square (110889 = 333²).

The spelling of 631025 in words is "six hundred thirty-one thousand, twenty-five".