25055050500503 has 16 divisors (see below), whose sum is σ = 26168847344640. Its totient is φ = 23943301420896.

The previous prime is 25055050500421. The next prime is 25055050500509. The reversal of 25055050500503 is 30500505055052.

It is a cyclic number.

It is not a de Polignac number, because 25055050500503 - 2¹⁸ = 25055050238359 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 (25055050500509) 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, 106504733 + ... + 106739721.

It is an arithmetic number, because the mean of its divisors is an integer number (1635552959040).

Almost surely, 2^{25055050500503} is an apocalyptic number.

25055050500503 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25055050500503 is a deficient number, since it is larger than the sum of its proper divisors (1113796844137).

25055050500503 is a wasteful number, since it uses less digits than its factorization.

25055050500503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239326.

The product of its (nonzero) digits is 93750, while the sum is 35.

Adding to 25055050500503 its reverse (30500505055052), we get a palindrome (55555555555555).

The spelling of 25055050500503 in words is "twenty-five trillion, fifty-five billion, fifty million, five hundred thousand, five hundred three".