125604013 has 2 divisors, whose sum is σ = 125604014. Its totient is φ = 125604012.

The previous prime is 125603993. The next prime is 125604047. The reversal of 125604013 is 310406521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83119689 + 42484324 = 9117^2 + 6518^2 .

It is an emirp because it is prime and its reverse (310406521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125604013 - 2⁹ = 125603501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125605013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62802006 + 62802007.

It is an arithmetic number, because the mean of its divisors is an integer number (62802007).

Almost surely, 2^125604013 is an apocalyptic number.

It is an amenable number.

125604013 is a deficient number, since it is larger than the sum of its proper divisors (1).

125604013 is an equidigital number, since it uses as much as digits as its factorization.

125604013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 125604013 is about 11207.3196171074. The cubic root of 125604013 is about 500.8040569584.

The spelling of 125604013 in words is "one hundred twenty-five million, six hundred four thousand, thirteen".