25204102255 has 4 divisors (see below), whose sum is σ = 30244922712. Its totient is φ = 20163281800.

The previous prime is 25204102249. The next prime is 25204102291. The reversal of 25204102255 is 55220140252.

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

It is not a de Polignac number, because 25204102255 - 2⁷ = 25204102127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2520410221 + ... + 2520410230.

It is an arithmetic number, because the mean of its divisors is an integer number (7561230678).

Almost surely, 2^25204102255 is an apocalyptic number.

25204102255 is a deficient number, since it is larger than the sum of its proper divisors (5040820457).

25204102255 is an equidigital number, since it uses as much as digits as its factorization.

25204102255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5040820456.

The product of its (nonzero) digits is 8000, while the sum is 28.

The spelling of 25204102255 in words is "twenty-five billion, two hundred four million, one hundred two thousand, two hundred fifty-five".