136725659 has 4 divisors (see below), whose sum is σ = 156257904. Its totient is φ = 117193416.

The previous prime is 136725649. The next prime is 136725661. The reversal of 136725659 is 956527631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 956527631 = 2113 ⋅452687.

It is a cyclic number.

It is not a de Polignac number, because 136725659 - 2⁴ = 136725643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136725649) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9766112 + ... + 9766125.

It is an arithmetic number, because the mean of its divisors is an integer number (39064476).

Almost surely, 2^136725659 is an apocalyptic number.

136725659 is a deficient number, since it is larger than the sum of its proper divisors (19532245).

136725659 is an equidigital number, since it uses as much as digits as its factorization.

136725659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19532244.

The product of its digits is 340200, while the sum is 44.

The square root of 136725659 is about 11692.9747712034. The cubic root of 136725659 is about 515.1693401082.

The spelling of 136725659 in words is "one hundred thirty-six million, seven hundred twenty-five thousand, six hundred fifty-nine".