25055052779 has 4 divisors (see below), whose sum is σ = 25863280320. Its totient is φ = 24246825240.

The previous prime is 25055052769. The next prime is 25055052787. The reversal of 25055052779 is 97725055052.

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

It is a cyclic number.

It is not a de Polignac number, because 25055052779 - 2²⁰ = 25054004203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25055052769) 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, 404113724 + ... + 404113785.

It is an arithmetic number, because the mean of its divisors is an integer number (6465820080).

Almost surely, 2^25055052779 is an apocalyptic number.

25055052779 is a deficient number, since it is larger than the sum of its proper divisors (808227541).

25055052779 is an equidigital number, since it uses as much as digits as its factorization.

25055052779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808227540.

The product of its (nonzero) digits is 1102500, while the sum is 47.

The spelling of 25055052779 in words is "twenty-five billion, fifty-five million, fifty-two thousand, seven hundred seventy-nine".