515530025 has 12 divisors (see below), whose sum is σ = 641079132. Its totient is φ = 411248640.

The previous prime is 515530007. The next prime is 515530039. The reversal of 515530025 is 520035515.

It can be written as a sum of positive squares in 6 ways, for example, as 1510441 + 514019584 = 1229^2 + 22672^2 .

It is not a de Polignac number, because 515530025 - 2¹⁴ = 515513641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 515529976 and 515530003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20384 + ... + 38033.

It is an arithmetic number, because the mean of its divisors is an integer number (53423261).

Almost surely, 2^515530025 is an apocalyptic number.

It is an amenable number.

515530025 is a deficient number, since it is larger than the sum of its proper divisors (125549107).

515530025 is a wasteful number, since it uses less digits than its factorization.

515530025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58780 (or 58775 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 515530025 is about 22705.2862787502. The cubic root of 515530025 is about 801.8343454438.

The spelling of 515530025 in words is "five hundred fifteen million, five hundred thirty thousand, twenty-five".