25448052171 has 4 divisors (see below), whose sum is σ = 33930736232. Its totient is φ = 16965368112.

The previous prime is 25448052167. The next prime is 25448052191. The reversal of 25448052171 is 17125084452.

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

It is not a de Polignac number, because 25448052171 - 2² = 25448052167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25448052191) 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, 4241342026 + ... + 4241342031.

It is an arithmetic number, because the mean of its divisors is an integer number (8482684058).

Almost surely, 2^25448052171 is an apocalyptic number.

25448052171 is a deficient number, since it is larger than the sum of its proper divisors (8482684061).

25448052171 is an equidigital number, since it uses as much as digits as its factorization.

25448052171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8482684060.

The product of its (nonzero) digits is 89600, while the sum is 39.

The spelling of 25448052171 in words is "twenty-five billion, four hundred forty-eight million, fifty-two thousand, one hundred seventy-one".