125570903 has 4 divisors (see below), whose sum is σ = 125792160. Its totient is φ = 125349648.

The previous prime is 125570897. The next prime is 125570909. The reversal of 125570903 is 309075521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 309075521 = 17 ⋅18180913.

It is an interprime number because it is at equal distance from previous prime (125570897) and next prime (125570909).

It is a cyclic number.

It is not a de Polignac number, because 125570903 - 2²⁴ = 108793687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125570903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125570909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109775 + ... + 110912.

It is an arithmetic number, because the mean of its divisors is an integer number (31448040).

Almost surely, 2^125570903 is an apocalyptic number.

125570903 is a deficient number, since it is larger than the sum of its proper divisors (221257).

125570903 is an equidigital number, since it uses as much as digits as its factorization.

125570903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221256.

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

The square root of 125570903 is about 11205.8423601263. The cubic root of 125570903 is about 500.7600480685.

The spelling of 125570903 in words is "one hundred twenty-five million, five hundred seventy thousand, nine hundred three".