125608013 has 2 divisors, whose sum is σ = 125608014. Its totient is φ = 125608012.

The previous prime is 125607983. The next prime is 125608057. The reversal of 125608013 is 310806521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104796169 + 20811844 = 10237^2 + 4562^2 .

It is a cyclic number.

It is not a de Polignac number, because 125608013 - 2⁶ = 125607949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125608073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62804006 + 62804007.

It is an arithmetic number, because the mean of its divisors is an integer number (62804007).

Almost surely, 2^125608013 is an apocalyptic number.

It is an amenable number.

125608013 is a deficient number, since it is larger than the sum of its proper divisors (1).

125608013 is an equidigital number, since it uses as much as digits as its factorization.

125608013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 125608013 is about 11207.4980704883. The cubic root of 125608013 is about 500.8093731234.

The spelling of 125608013 in words is "one hundred twenty-five million, six hundred eight thousand, thirteen".