125615903 has 8 divisors (see below), whose sum is σ = 149803008. Its totient is φ = 102989304.

The previous prime is 125615887. The next prime is 125615911. The reversal of 125615903 is 309516521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125615903 - 2⁴ = 125615887 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 125615903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125615933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389951 + ... + 390272.

It is an arithmetic number, because the mean of its divisors is an integer number (18725376).

Almost surely, 2^125615903 is an apocalyptic number.

125615903 is a deficient number, since it is larger than the sum of its proper divisors (24187105).

125615903 is an equidigital number, since it uses as much as digits as its factorization.

125615903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780253.

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

The square root of 125615903 is about 11207.8500614525. The cubic root of 125615903 is about 500.8198589279.

The spelling of 125615903 in words is "one hundred twenty-five million, six hundred fifteen thousand, nine hundred three".