25669872 has 100 divisors (see below), whose sum is σ = 76970520. Its totient is φ = 8249472.

The previous prime is 25669859. The next prime is 25669877. The reversal of 25669872 is 27896652.

25669872 is a `hidden beast` number, since 2 + 566 + 9 + 87 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25669877) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37243 + ... + 37925.

Almost surely, 2^25669872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25669872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38485260).

25669872 is an abundant number, since it is smaller than the sum of its proper divisors (51300648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25669872 is a wasteful number, since it uses less digits than its factorization.

25669872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 717 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 25669872 is about 5066.5443844893. The cubic root of 25669872 is about 294.9904124051.

The spelling of 25669872 in words is "twenty-five million, six hundred sixty-nine thousand, eight hundred seventy-two".