136555725 has 12 divisors (see below), whose sum is σ = 225772256. Its totient is φ = 72829680.

The previous prime is 136555723. The next prime is 136555729. The reversal of 136555725 is 527555631.

It is not a de Polignac number, because 136555725 - 2¹ = 136555723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136555723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 910297 + ... + 910446.

Almost surely, 2^136555725 is an apocalyptic number.

136555725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136555725 is a deficient number, since it is larger than the sum of its proper divisors (89216531).

136555725 is a wasteful number, since it uses less digits than its factorization.

136555725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820756 (or 1820751 counting only the distinct ones).

The product of its digits is 157500, while the sum is 39.

The square root of 136555725 is about 11685.7060120474. The cubic root of 136555725 is about 514.9558198818.

The spelling of 136555725 in words is "one hundred thirty-six million, five hundred fifty-five thousand, seven hundred twenty-five".