25544992 has 48 divisors (see below), whose sum is σ = 56657664. Its totient is φ = 11232000.

The previous prime is 25544989. The next prime is 25545011. The reversal of 25544992 is 29944552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9742 + ... + 12082.

It is an arithmetic number, because the mean of its divisors is an integer number (1180368).

Almost surely, 2^25544992 is an apocalyptic number.

25544992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25544992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28328832).

25544992 is an abundant number, since it is smaller than the sum of its proper divisors (31112672).

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

25544992 is a wasteful number, since it uses less digits than its factorization.

25544992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393 (or 2385 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The square root of 25544992 is about 5054.2053777028. The cubic root of 25544992 is about 294.5112735088.

The spelling of 25544992 in words is "twenty-five million, five hundred forty-four thousand, nine hundred ninety-two".