125315539 has 2 divisors, whose sum is σ = 125315540. Its totient is φ = 125315538.

The previous prime is 125315521. The next prime is 125315543. The reversal of 125315539 is 935513521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125315539 - 2¹⁷ = 125184467 is a prime.

It is not a weakly prime, because it can be changed into another prime (125315579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62657769 + 62657770.

It is an arithmetic number, because the mean of its divisors is an integer number (62657770).

Almost surely, 2^125315539 is an apocalyptic number.

125315539 is a deficient number, since it is larger than the sum of its proper divisors (1).

125315539 is an equidigital number, since it uses as much as digits as its factorization.

125315539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20250, while the sum is 34.

The square root of 125315539 is about 11194.4423264404. The cubic root of 125315539 is about 500.4203651539.

The spelling of 125315539 in words is "one hundred twenty-five million, three hundred fifteen thousand, five hundred thirty-nine".