125507903 has 2 divisors, whose sum is σ = 125507904. Its totient is φ = 125507902.

The previous prime is 125507887. The next prime is 125507909. The reversal of 125507903 is 309705521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125507903 - 2⁴ = 125507887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125507903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125507909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62753951 + 62753952.

It is an arithmetic number, because the mean of its divisors is an integer number (62753952).

Almost surely, 2^125507903 is an apocalyptic number.

125507903 is a deficient number, since it is larger than the sum of its proper divisors (1).

125507903 is an equidigital number, since it uses as much as digits as its factorization.

125507903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 125507903 is about 11203.0309738035. The cubic root of 125507903 is about 500.6762888544.

The spelling of 125507903 in words is "one hundred twenty-five million, five hundred seven thousand, nine hundred three".