136131405725 has 24 divisors (see below), whose sum is σ = 192945656640. Its totient is φ = 93333697920.

The previous prime is 136131405701. The next prime is 136131405757. The reversal of 136131405725 is 527504131631.

It is a happy number.

It is not a de Polignac number, because 136131405725 - 2⁶ = 136131405661 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1236794 + ... + 1342356.

It is an arithmetic number, because the mean of its divisors is an integer number (8039402360).

Almost surely, 2^136131405725 is an apocalyptic number.

It is an amenable number.

136131405725 is a deficient number, since it is larger than the sum of its proper divisors (56814250915).

136131405725 is a wasteful number, since it uses less digits than its factorization.

136131405725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112949 (or 112944 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 136131405725 in words is "one hundred thirty-six billion, one hundred thirty-one million, four hundred five thousand, seven hundred twenty-five".