25813984 has 72 divisors (see below), whose sum is σ = 60070248. Its totient is φ = 10886400.

The previous prime is 25813937. The next prime is 25813999. The reversal of 25813984 is 48931852.

Its product of digits (69120) is a multiple of the sum of its prime factors (288).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158287 + ... + 158449.

It is an arithmetic number, because the mean of its divisors is an integer number (834309).

Almost surely, 2^25813984 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 25813984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30035124).

25813984 is an abundant number, since it is smaller than the sum of its proper divisors (34256264).

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

25813984 is a wasteful number, since it uses less digits than its factorization.

25813984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 273 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 25813984 is about 5080.7464018587. The cubic root of 25813984 is about 295.5414130916.

The spelling of 25813984 in words is "twenty-five million, eight hundred thirteen thousand, nine hundred eighty-four".