513215151125 has 8 divisors (see below), whose sum is σ = 640492508760. Its totient is φ = 410572120800.

The previous prime is 513215151121. The next prime is 513215151149. The reversal of 513215151125 is 521151512315.

It can be written as a sum of positive squares in 4 ways, for example, as 4756309156 + 508458841969 = 68966^2 + 713063^2 .

It is not a de Polignac number, because 513215151125 - 2² = 513215151121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 513215151091 and 513215151100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513215151121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2052860480 + ... + 2052860729.

It is an arithmetic number, because the mean of its divisors is an integer number (80061563595).

Almost surely, 2^513215151125 is an apocalyptic number.

It is an amenable number.

513215151125 is a deficient number, since it is larger than the sum of its proper divisors (127277357635).

513215151125 is an equidigital number, since it uses as much as digits as its factorization.

513215151125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4105721224 (or 4105721214 counting only the distinct ones).

The product of its digits is 7500, while the sum is 32.

The spelling of 513215151125 in words is "five hundred thirteen billion, two hundred fifteen million, one hundred fifty-one thousand, one hundred twenty-five".