125236913 has 2 divisors, whose sum is σ = 125236914. Its totient is φ = 125236912.

The previous prime is 125236907. The next prime is 125236921. The reversal of 125236913 is 319632521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118744609 + 6492304 = 10897^2 + 2548^2 .

It is a cyclic number.

It is not a de Polignac number, because 125236913 - 2²² = 121042609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125236913.

It is not a weakly prime, because it can be changed into another prime (125236613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62618456 + 62618457.

It is an arithmetic number, because the mean of its divisors is an integer number (62618457).

Almost surely, 2^125236913 is an apocalyptic number.

It is an amenable number.

125236913 is a deficient number, since it is larger than the sum of its proper divisors (1).

125236913 is an equidigital number, since it uses as much as digits as its factorization.

125236913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 32.

The square root of 125236913 is about 11190.9299434855. The cubic root of 125236913 is about 500.3156846445.

The spelling of 125236913 in words is "one hundred twenty-five million, two hundred thirty-six thousand, nine hundred thirteen".