125538002503 has 4 divisors (see below), whose sum is σ = 125544580920. Its totient is φ = 125531424088.

The previous prime is 125538002461. The next prime is 125538002549. The reversal of 125538002503 is 305200835521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125538002503 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 (125538002563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3260500 + ... + 3298777.

It is an arithmetic number, because the mean of its divisors is an integer number (31386145230).

Almost surely, 2^125538002503 is an apocalyptic number.

125538002503 is a deficient number, since it is larger than the sum of its proper divisors (6578417).

125538002503 is an equidigital number, since it uses as much as digits as its factorization.

125538002503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6578416.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 125538002503 in words is "one hundred twenty-five billion, five hundred thirty-eight million, two thousand, five hundred three".