25652238671 has 4 divisors (see below), whose sum is σ = 25669822200. Its totient is φ = 25634655144.

The previous prime is 25652238649. The next prime is 25652238679. The reversal of 25652238671 is 17683225652.

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 25652238671 - 2¹⁸ = 25651976527 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 (25652238679) 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, 8789576 + ... + 8792493.

It is an arithmetic number, because the mean of its divisors is an integer number (6417455550).

Almost surely, 2^25652238671 is an apocalyptic number.

25652238671 is a deficient number, since it is larger than the sum of its proper divisors (17583529).

25652238671 is a wasteful number, since it uses less digits than its factorization.

25652238671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17583528.

The product of its digits is 1209600, while the sum is 47.

The spelling of 25652238671 in words is "twenty-five billion, six hundred fifty-two million, two hundred thirty-eight thousand, six hundred seventy-one".