136725913 has 2 divisors, whose sum is σ = 136725914. Its totient is φ = 136725912.

The previous prime is 136725887. The next prime is 136725929. The reversal of 136725913 is 319527631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128414224 + 8311689 = 11332^2 + 2883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136725913 is a prime.

It is not a weakly prime, because it can be changed into another prime (136723913) 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 as a sum of consecutive naturals, namely, 68362956 + 68362957.

It is an arithmetic number, because the mean of its divisors is an integer number (68362957).

Almost surely, 2^136725913 is an apocalyptic number.

It is an amenable number.

136725913 is a deficient number, since it is larger than the sum of its proper divisors (1).

136725913 is an equidigital number, since it uses as much as digits as its factorization.

136725913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 37.

The square root of 136725913 is about 11692.9856324208. The cubic root of 136725913 is about 515.1696591240.

The spelling of 136725913 in words is "one hundred thirty-six million, seven hundred twenty-five thousand, nine hundred thirteen".