631499425 has 24 divisors (see below), whose sum is σ = 849367512. Its totient is φ = 463872000.

The previous prime is 631499417. The next prime is 631499437. The reversal of 631499425 is 524994136.

631499425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 458944929 + 172554496 = 21423^2 + 13136^2 .

It is not a de Polignac number, because 631499425 - 2³ = 631499417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 696 + ... + 35545.

It is an arithmetic number, because the mean of its divisors is an integer number (35390313).

Almost surely, 2^631499425 is an apocalyptic number.

It is an amenable number.

631499425 is a deficient number, since it is larger than the sum of its proper divisors (217868087).

631499425 is a wasteful number, since it uses less digits than its factorization.

631499425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36309 (or 36304 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The square root of 631499425 is about 25129.6523055931. The cubic root of 631499425 is about 857.9414551548.

The spelling of 631499425 in words is "six hundred thirty-one million, four hundred ninety-nine thousand, four hundred twenty-five".