630261025 has 9 divisors (see below), whose sum is σ = 781679353. Its totient is φ = 504108400.

The previous prime is 630260977. The next prime is 630261041. The reversal of 630261025 is 520162036.

The square root of 630261025 is 25105.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 66863329 + 563397696 = 8177^2 + 23736^2 .

It is not a de Polignac number, because 630261025 - 2¹⁵ = 630228257 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 an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 123015 + ... + 128035.

Almost surely, 2^630261025 is an apocalyptic number.

630261025 is the 25105-th square number.

630261025 is the 12553-rd centered octagonal number.

It is an amenable number.

630261025 is a deficient number, since it is larger than the sum of its proper divisors (151418328).

630261025 is an frugal number, since it uses more digits than its factorization.

630261025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10052 (or 5026 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The cubic root of 630261025 is about 857.3802670077.

Multiplying 630261025 by its sum of digits (25), we get a square (15756525625 = 125525²).

630261025 divided by its sum of digits (25) gives a square (25210441 = 5021²).

The spelling of 630261025 in words is "six hundred thirty million, two hundred sixty-one thousand, twenty-five".