25172887067 has 4 divisors (see below), whose sum is σ = 26497775880. Its totient is φ = 23847998256.

The previous prime is 25172887031. The next prime is 25172887093. The reversal of 25172887067 is 76078827152.

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 25172887067 - 2⁸ = 25172886811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25172887867) 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, 662444378 + ... + 662444415.

It is an arithmetic number, because the mean of its divisors is an integer number (6624443970).

Almost surely, 2^25172887067 is an apocalyptic number.

25172887067 is a deficient number, since it is larger than the sum of its proper divisors (1324888813).

25172887067 is a wasteful number, since it uses less digits than its factorization.

25172887067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324888812.

The product of its (nonzero) digits is 2634240, while the sum is 53.

The spelling of 25172887067 in words is "twenty-five billion, one hundred seventy-two million, eight hundred eighty-seven thousand, sixty-seven".