136647625 has 16 divisors (see below), whose sum is σ = 173341584. Its totient is φ = 107520000.

The previous prime is 136647617. The next prime is 136647661. The reversal of 136647625 is 526746631.

It can be written as a sum of positive squares in 8 ways, for example, as 122412096 + 14235529 = 11064^2 + 3773^2 .

It is not a de Polignac number, because 136647625 - 2³ = 136647617 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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1336 + ... + 16585.

It is an arithmetic number, because the mean of its divisors is an integer number (10833849).

Almost surely, 2^136647625 is an apocalyptic number.

It is an amenable number.

136647625 is a deficient number, since it is larger than the sum of its proper divisors (36693959).

136647625 is an equidigital number, since it uses as much as digits as its factorization.

136647625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17997 (or 17987 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 136647625 is about 11689.6375050726. The cubic root of 136647625 is about 515.0713132151.

The spelling of 136647625 in words is "one hundred thirty-six million, six hundred forty-seven thousand, six hundred twenty-five".