136521430625 has 80 divisors (see below), whose sum is σ = 181381939200. Its totient is φ = 102510408000.

The previous prime is 136521430603. The next prime is 136521430667. The reversal of 136521430625 is 526034125631.

It is not a de Polignac number, because 136521430625 - 2²⁶ = 136454321761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 271414124 + ... + 271414626.

It is an arithmetic number, because the mean of its divisors is an integer number (2267274240).

Almost surely, 2^136521430625 is an apocalyptic number.

It is an amenable number.

136521430625 is a deficient number, since it is larger than the sum of its proper divisors (44860508575).

136521430625 is an equidigital number, since it uses as much as digits as its factorization.

136521430625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 849 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 136521430625 in words is "one hundred thirty-six billion, five hundred twenty-one million, four hundred thirty thousand, six hundred twenty-five".