125137913 has 2 divisors, whose sum is σ = 125137914. Its totient is φ = 125137912.

The previous prime is 125137907. The next prime is 125137927. The reversal of 125137913 is 319731521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119530489 + 5607424 = 10933^2 + 2368^2 .

It is a cyclic number.

It is not a de Polignac number, because 125137913 - 2¹² = 125133817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125137913.

It is not a weakly prime, because it can be changed into another prime (125137213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62568956 + 62568957.

It is an arithmetic number, because the mean of its divisors is an integer number (62568957).

Almost surely, 2^125137913 is an apocalyptic number.

It is an amenable number.

125137913 is a deficient number, since it is larger than the sum of its proper divisors (1).

125137913 is an equidigital number, since it uses as much as digits as its factorization.

125137913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670, while the sum is 32.

The square root of 125137913 is about 11186.5058440963. The cubic root of 125137913 is about 500.1838164148.

The spelling of 125137913 in words is "one hundred twenty-five million, one hundred thirty-seven thousand, nine hundred thirteen".