125715559 has 2 divisors, whose sum is σ = 125715560. Its totient is φ = 125715558.

The previous prime is 125715521. The next prime is 125715587. The reversal of 125715559 is 955517521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125715559 - 2⁷ = 125715431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125715059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62857779 + 62857780.

It is an arithmetic number, because the mean of its divisors is an integer number (62857780).

Almost surely, 2^125715559 is an apocalyptic number.

125715559 is a deficient number, since it is larger than the sum of its proper divisors (1).

125715559 is an equidigital number, since it uses as much as digits as its factorization.

125715559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78750, while the sum is 40.

The square root of 125715559 is about 11212.2949925517. The cubic root of 125715559 is about 500.9522639022.

The spelling of 125715559 in words is "one hundred twenty-five million, seven hundred fifteen thousand, five hundred fifty-nine".