630445625 has 20 divisors (see below), whose sum is σ = 792299508. Its totient is φ = 501480000.

The previous prime is 630445603. The next prime is 630445633. The reversal of 630445625 is 526544036.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 620358649 + 10086976 = 24907^2 + 3176^2 .

It is not a de Polignac number, because 630445625 - 2¹² = 630441529 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 110339 + ... + 115911.

Almost surely, 2^630445625 is an apocalyptic number.

It is an amenable number.

630445625 is a deficient number, since it is larger than the sum of its proper divisors (161853883).

630445625 is an equidigital number, since it uses as much as digits as its factorization.

630445625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5774 (or 5759 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 630445625 is about 25108.6762892830. The cubic root of 630445625 is about 857.4639661637.

The spelling of 630445625 in words is "six hundred thirty million, four hundred forty-five thousand, six hundred twenty-five".