631033225 has 12 divisors (see below), whose sum is σ = 823665040. Its totient is φ = 478256400.

The previous prime is 631033219. The next prime is 631033237. The reversal of 631033225 is 522330136.

It is a happy number.

631033225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 631033225 - 2²¹ = 628936073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 631033225.

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, 663771 + ... + 664720.

Almost surely, 2^631033225 is an apocalyptic number.

It is an amenable number.

631033225 is a deficient number, since it is larger than the sum of its proper divisors (192631815).

631033225 is a wasteful number, since it uses less digits than its factorization.

631033225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328520 (or 1328515 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 631033225 is about 25120.3746986386. The cubic root of 631033225 is about 857.7302801025.

The spelling of 631033225 in words is "six hundred thirty-one million, thirty-three thousand, two hundred twenty-five".