125613139 has 2 divisors, whose sum is σ = 125613140. Its totient is φ = 125613138.

The previous prime is 125613133. The next prime is 125613197. The reversal of 125613139 is 931316521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125613139 - 2¹¹ = 125611091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125613139.

It is not a weakly prime, because it can be changed into another prime (125613133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62806569 + 62806570.

It is an arithmetic number, because the mean of its divisors is an integer number (62806570).

Almost surely, 2^125613139 is an apocalyptic number.

125613139 is a deficient number, since it is larger than the sum of its proper divisors (1).

125613139 is an equidigital number, since it uses as much as digits as its factorization.

125613139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 31.

The square root of 125613139 is about 11207.7267543423. The cubic root of 125613139 is about 500.8161856238.

The spelling of 125613139 in words is "one hundred twenty-five million, six hundred thirteen thousand, one hundred thirty-nine".