125516903 has 2 divisors, whose sum is σ = 125516904. Its totient is φ = 125516902.

The previous prime is 125516893. The next prime is 125516921. The reversal of 125516903 is 309615521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125516903 - 2⁸ = 125516647 is a prime.

It is a super-2 number, since 2×125516903² = 31508985877422818, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125516903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125516953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62758451 + 62758452.

It is an arithmetic number, because the mean of its divisors is an integer number (62758452).

Almost surely, 2^125516903 is an apocalyptic number.

125516903 is a deficient number, since it is larger than the sum of its proper divisors (1).

125516903 is an equidigital number, since it uses as much as digits as its factorization.

125516903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 125516903 is about 11203.4326436142. The cubic root of 125516903 is about 500.6882561722.

The spelling of 125516903 in words is "one hundred twenty-five million, five hundred sixteen thousand, nine hundred three".