125918017 has 2 divisors, whose sum is σ = 125918018. Its totient is φ = 125918016.

The previous prime is 125917949. The next prime is 125918041. The reversal of 125918017 is 710819521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124456336 + 1461681 = 11156^2 + 1209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125918017 is a prime.

It is not a weakly prime, because it can be changed into another prime (125918057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62959008 + 62959009.

It is an arithmetic number, because the mean of its divisors is an integer number (62959009).

Almost surely, 2^125918017 is an apocalyptic number.

It is an amenable number.

125918017 is a deficient number, since it is larger than the sum of its proper divisors (1).

125918017 is an equidigital number, since it uses as much as digits as its factorization.

125918017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 34.

The square root of 125918017 is about 11221.3197530415. The cubic root of 125918017 is about 501.2210383699.

The spelling of 125918017 in words is "one hundred twenty-five million, nine hundred eighteen thousand, seventeen".