513075625 has 10 divisors (see below), whose sum is σ = 641140082. Its totient is φ = 410460000.

The previous prime is 513075617. The next prime is 513075643. The reversal of 513075625 is 526570315.

It can be written as a sum of positive squares in 5 ways, for example, as 273042576 + 240033049 = 16524^2 + 15493^2 .

It is not a de Polignac number, because 513075625 - 2³ = 513075617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 409836 + ... + 411085.

Almost surely, 2^513075625 is an apocalyptic number.

It is an amenable number.

513075625 is a deficient number, since it is larger than the sum of its proper divisors (128064457).

513075625 is an frugal number, since it uses more digits than its factorization.

513075625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820941 (or 820926 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 513075625 is about 22651.1727069483. The cubic root of 513075625 is about 800.5598295014.

The spelling of 513075625 in words is "five hundred thirteen million, seventy-five thousand, six hundred twenty-five".