25866372 has 72 divisors (see below), whose sum is σ = 72883776. Its totient is φ = 6993216.

The previous prime is 25866361. The next prime is 25866377. The reversal of 25866372 is 27366852.

It is a self number, because there is not a number n which added to its sum of digits gives 25866372.

It is not an unprimeable number, because it can be changed into a prime (25866377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29898 + ... + 30750.

Almost surely, 2^25866372 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 25866372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36441888).

25866372 is an abundant number, since it is smaller than the sum of its proper divisors (47017404).

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

25866372 is a wasteful number, since it uses less digits than its factorization.

25866372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 884 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 25866372 is about 5085.8993305019. The cubic root of 25866372 is about 295.7412061122.

The spelling of 25866372 in words is "twenty-five million, eight hundred sixty-six thousand, three hundred seventy-two".