136656625 has 32 divisors (see below), whose sum is σ = 206399232. Its totient is φ = 88185600.

The previous prime is 136656551. The next prime is 136656643. The reversal of 136656625 is 526656631.

It is a happy number.

It is not a de Polignac number, because 136656625 - 2¹¹ = 136654577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10282 + ... + 19468.

It is an arithmetic number, because the mean of its divisors is an integer number (6449976).

Almost surely, 2^136656625 is an apocalyptic number.

It is an amenable number.

136656625 is a deficient number, since it is larger than the sum of its proper divisors (69742607).

136656625 is an equidigital number, since it uses as much as digits as its factorization.

136656625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9226 (or 9216 counting only the distinct ones).

The product of its digits is 194400, while the sum is 40.

The square root of 136656625 is about 11690.0224550683. The cubic root of 136656625 is about 515.0826209858.

The spelling of 136656625 in words is "one hundred thirty-six million, six hundred fifty-six thousand, six hundred twenty-five".