513232025 has 6 divisors (see below), whose sum is σ = 636407742. Its totient is φ = 410585600.

The previous prime is 513232021. The next prime is 513232033. The reversal of 513232025 is 520232315.

It can be written as a sum of positive squares in 3 ways, for example, as 134073241 + 379158784 = 11579^2 + 19472^2 .

It is not a de Polignac number, because 513232025 - 2² = 513232021 is a prime.

It is a super-2 number, since 2×513232025² = 526814222971201250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513232021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10264616 + ... + 10264665.

It is an arithmetic number, because the mean of its divisors is an integer number (106067957).

Almost surely, 2^513232025 is an apocalyptic number.

It is an amenable number.

513232025 is a deficient number, since it is larger than the sum of its proper divisors (123175717).

513232025 is a wasteful number, since it uses less digits than its factorization.

513232025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20529291 (or 20529286 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 513232025 is about 22654.6248037790. The cubic root of 513232025 is about 800.6411656834.

The spelling of 513232025 in words is "five hundred thirteen million, two hundred thirty-two thousand, twenty-five".