513000025 has 12 divisors (see below), whose sum is σ = 636473772. Its totient is φ = 410171840.

The previous prime is 513000023. The next prime is 513000083. The reversal of 513000025 is 520000315.

It can be written as a sum of positive squares in 6 ways, for example, as 43454464 + 469545561 = 6592^2 + 21669^2 .

It is not a de Polignac number, because 513000025 - 2¹ = 513000023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 512999972 and 513000008.

It is not an unprimeable number, because it can be changed into a prime (513000023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51339 + ... + 60511.

It is an arithmetic number, because the mean of its divisors is an integer number (53039481).

Almost surely, 2^513000025 is an apocalyptic number.

It is an amenable number.

513000025 is a deficient number, since it is larger than the sum of its proper divisors (123473747).

513000025 is a wasteful number, since it uses less digits than its factorization.

513000025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11420 (or 11415 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 513000025 is about 22649.5038577007. The cubic root of 513000025 is about 800.5205076205.

The spelling of 513000025 in words is "five hundred thirteen million, twenty-five", and thus it is an aban number.