513656325 has 72 divisors (see below), whose sum is σ = 1132371968. Its totient is φ = 216743040.

The previous prime is 513656321. The next prime is 513656327. The reversal of 513656325 is 523656315.

513656325 is a `hidden beast` number, since 5 + 13 + 6 + 5 + 632 + 5 = 666.

It is not a de Polignac number, because 513656325 - 2² = 513656321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 513656325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513656321) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7932 + ... + 33018.

Almost surely, 2^513656325 is an apocalyptic number.

It is an amenable number.

513656325 is an abundant number, since it is smaller than the sum of its proper divisors (618715643).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513656325 is a wasteful number, since it uses less digits than its factorization.

513656325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25123 (or 25115 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 513656325 is about 22663.9874029263. The cubic root of 513656325 is about 800.8617406913.

The spelling of 513656325 in words is "five hundred thirteen million, six hundred fifty-six thousand, three hundred twenty-five".