25819056 has 120 divisors (see below), whose sum is σ = 78343200. Its totient is φ = 7907328.

The previous prime is 25819033. The next prime is 25819093. The reversal of 25819056 is 65091852.

It is a happy number.

It is a super-2 number, since 2×25819056² = 1333247305462272, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25819056.

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, 129645 + ... + 129843.

It is an arithmetic number, because the mean of its divisors is an integer number (652860).

Almost surely, 2^25819056 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 25819056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39171600).

25819056 is an abundant number, since it is smaller than the sum of its proper divisors (52524144).

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

25819056 is a wasteful number, since it uses less digits than its factorization.

25819056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 25819056 is about 5081.2455166032. The cubic root of 25819056 is about 295.5607680774.

The spelling of 25819056 in words is "twenty-five million, eight hundred nineteen thousand, fifty-six".