25818912 has 120 divisors (see below), whose sum is σ = 86841216. Its totient is φ = 7371648.

The previous prime is 25818911. The next prime is 25818917. The reversal of 25818912 is 21981852.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25818911) 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, 17433 + ... + 18855.

Almost surely, 2^25818912 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 25818912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43420608).

25818912 is an abundant number, since it is smaller than the sum of its proper divisors (61022304).

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

25818912 is a wasteful number, since it uses less digits than its factorization.

25818912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452 (or 1435 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 25818912 is about 5081.2313468292. The cubic root of 25818912 is about 295.5602186018.

The spelling of 25818912 in words is "twenty-five million, eight hundred eighteen thousand, nine hundred twelve".