513530255254325 has 24 divisors (see below), whose sum is σ = 637867037204040. Its totient is φ = 410121351936000.

The previous prime is 513530255254307. The next prime is 513530255254433. The reversal of 513530255254325 is 523452552035315.

It can be written as a sum of positive squares in 12 ways, for example, as 262411942349956 + 251118312904369 = 16199134^2 + 15846713^2 .

It is a de Polignac number, because none of the positive numbers 2^k-513530255254325 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323101181 + ... + 324686669.

It is an arithmetic number, because the mean of its divisors is an integer number (26577793216835).

Almost surely, 2^{513530255254325} is an apocalyptic number.

It is an amenable number.

513530255254325 is a deficient number, since it is larger than the sum of its proper divisors (124336781949715).

513530255254325 is a wasteful number, since it uses less digits than its factorization.

513530255254325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607657 (or 1607652 counting only the distinct ones).

The product of its (nonzero) digits is 13500000, while the sum is 50.

The spelling of 513530255254325 in words is "five hundred thirteen trillion, five hundred thirty billion, two hundred fifty-five million, two hundred fifty-four thousand, three hundred twenty-five".