630351025 has 12 divisors (see below), whose sum is σ = 782369692. Its totient is φ = 503807040.

The previous prime is 630351023. The next prime is 630351077. The reversal of 630351025 is 520153036.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 263705121 + 366645904 = 16239^2 + 19148^2 .

It is not a de Polignac number, because 630351025 - 2¹ = 630351023 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630351023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16639 + ... + 39211.

Almost surely, 2^630351025 is an apocalyptic number.

It is an amenable number.

630351025 is a deficient number, since it is larger than the sum of its proper divisors (152018667).

630351025 is a wasteful number, since it uses less digits than its factorization.

630351025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23700 (or 23695 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 630351025 is about 25106.7924076334. The cubic root of 630351025 is about 857.4210757882.

The spelling of 630351025 in words is "six hundred thirty million, three hundred fifty-one thousand, twenty-five".