25550122503 has 16 divisors (see below), whose sum is σ = 35257075200. Its totient is φ = 16438810080.

The previous prime is 25550122489. The next prime is 25550122537. The reversal of 25550122503 is 30522105552.

It is not a de Polignac number, because 25550122503 - 2⁵ = 25550122471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25550122553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137518 + ... + 264596.

It is an arithmetic number, because the mean of its divisors is an integer number (2203567200).

Almost surely, 2^25550122503 is an apocalyptic number.

25550122503 is a deficient number, since it is larger than the sum of its proper divisors (9706952697).

25550122503 is a wasteful number, since it uses less digits than its factorization.

25550122503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129422.

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 25550122503 in words is "twenty-five billion, five hundred fifty million, one hundred twenty-two thousand, five hundred three".