631325 has 6 divisors (see below), whose sum is σ = 782874. Its totient is φ = 505040.

The previous prime is 631307. The next prime is 631339. The reversal of 631325 is 523136.

It can be written as a sum of positive squares in 3 ways, for example, as 164836 + 466489 = 406^2 + 683^2 .

It is not a de Polignac number, because 631325 - 2¹⁸ = 369181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 631297 and 631306.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 631325.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12602 + ... + 12651.

It is an arithmetic number, because the mean of its divisors is an integer number (130479).

2⁶³¹³²⁵ is an apocalyptic number.

It is an amenable number.

631325 is a deficient number, since it is larger than the sum of its proper divisors (151549).

631325 is a wasteful number, since it uses less digits than its factorization.

631325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25263 (or 25258 counting only the distinct ones).

The product of its digits is 540, while the sum is 20.

The square root of 631325 is about 794.5596264598. The cubic root of 631325 is about 85.7862457871.

The spelling of 631325 in words is "six hundred thirty-one thousand, three hundred twenty-five".