136242881725 has 6 divisors (see below), whose sum is σ = 168941173370. Its totient is φ = 108994305360.

The previous prime is 136242881707. The next prime is 136242881741. The reversal of 136242881725 is 527188242631.

It can be written as a sum of positive squares in 3 ways, for example, as 7443720729 + 128799160996 = 86277^2 + 358886^2 .

It is not a de Polignac number, because 136242881725 - 2²⁹ = 135706010813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2724857610 + ... + 2724857659.

Almost surely, 2^136242881725 is an apocalyptic number.

It is an amenable number.

136242881725 is a deficient number, since it is larger than the sum of its proper divisors (32698291645).

136242881725 is an equidigital number, since it uses as much as digits as its factorization.

136242881725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5449715279 (or 5449715274 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The spelling of 136242881725 in words is "one hundred thirty-six billion, two hundred forty-two million, eight hundred eighty-one thousand, seven hundred twenty-five".