136813825 has 12 divisors (see below), whose sum is σ = 170332848. Its totient is φ = 109010000.

The previous prime is 136813811. The next prime is 136813847. The reversal of 136813825 is 528318631.

It is a de Polignac number, because none of the positive numbers 2^k-136813825 is a prime.

It is a super-2 number, since 2×136813825² = 37436045422261250, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 4627 + ... + 17176.

It is an arithmetic number, because the mean of its divisors is an integer number (14194404).

Almost surely, 2^136813825 is an apocalyptic number.

It is an amenable number.

136813825 is a deficient number, since it is larger than the sum of its proper divisors (33519023).

136813825 is a wasteful number, since it uses less digits than its factorization.

136813825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22064 (or 22059 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 136813825 is about 11696.7442051196. The cubic root of 136813825 is about 515.2800500289.

The spelling of 136813825 in words is "one hundred thirty-six million, eight hundred thirteen thousand, eight hundred twenty-five".