125615503 has 12 divisors (see below), whose sum is σ = 140415168. Its totient is φ = 112207680.

The previous prime is 125615471. The next prime is 125615509. The reversal of 125615503 is 305516521.

It is not a de Polignac number, because 125615503 - 2⁵ = 125615471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125615509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6750 + ... + 17227.

It is an arithmetic number, because the mean of its divisors is an integer number (11701264).

Almost surely, 2^125615503 is an apocalyptic number.

125615503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

125615503 is a deficient number, since it is larger than the sum of its proper divisors (14799665).

125615503 is a wasteful number, since it uses less digits than its factorization.

125615503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24034 (or 24021 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 125615503 is about 11207.8322168027. The cubic root of 125615503 is about 500.8193273387.

The spelling of 125615503 in words is "one hundred twenty-five million, six hundred fifteen thousand, five hundred three".