25669132681 has 8 divisors (see below), whose sum is σ = 26787466944. Its totient is φ = 24550988880.

The previous prime is 25669132651. The next prime is 25669132693. The reversal of 25669132681 is 18623196652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25669132681 - 2¹¹ = 25669130633 is a prime.

It is a super-2 number, since 2×25669132681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25669132651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274135 + ... + 355651.

It is an arithmetic number, because the mean of its divisors is an integer number (3348433368).

Almost surely, 2^25669132681 is an apocalyptic number.

It is an amenable number.

25669132681 is a deficient number, since it is larger than the sum of its proper divisors (1118334263).

25669132681 is a wasteful number, since it uses less digits than its factorization.

25669132681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95231.

The product of its digits is 933120, while the sum is 49.

The spelling of 25669132681 in words is "twenty-five billion, six hundred sixty-nine million, one hundred thirty-two thousand, six hundred eighty-one".