25818492 has 72 divisors (see below), whose sum is σ = 73799040. Its totient is φ = 6985440.

The previous prime is 25818469. The next prime is 25818521. The reversal of 25818492 is 29481852.

It is a self number, because there is not a number n which added to its sum of digits gives 25818492.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10017 + ... + 12327.

Almost surely, 2^25818492 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 25818492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36899520).

25818492 is an abundant number, since it is smaller than the sum of its proper divisors (47980548).

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

25818492 is a wasteful number, since it uses less digits than its factorization.

25818492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351 (or 2342 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 25818492 is about 5081.1900180962. The cubic root of 25818492 is about 295.5586159527.

The spelling of 25818492 in words is "twenty-five million, eight hundred eighteen thousand, four hundred ninety-two".