657136325 has 12 divisors (see below), whose sum is σ = 815166948. Its totient is φ = 525504000.

The previous prime is 657136321. The next prime is 657136331. The reversal of 657136325 is 523631756.

657136325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 128550244 + 528586081 = 11338^2 + 22991^2 .

It is not a de Polignac number, because 657136325 - 2² = 657136321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657136321) 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, 124949 + ... + 130101.

It is an arithmetic number, because the mean of its divisors is an integer number (67930579).

Almost surely, 2^657136325 is an apocalyptic number.

It is an amenable number.

657136325 is a deficient number, since it is larger than the sum of its proper divisors (158030623).

657136325 is a wasteful number, since it uses less digits than its factorization.

657136325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10264 (or 10259 counting only the distinct ones).

The product of its digits is 113400, while the sum is 38.

The square root of 657136325 is about 25634.6703704183. The cubic root of 657136325 is about 869.3977092660.

The spelling of 657136325 in words is "six hundred fifty-seven million, one hundred thirty-six thousand, three hundred twenty-five".