25788224 has 56 divisors (see below), whose sum is σ = 63812928. Its totient is φ = 10045440.

The previous prime is 25788137. The next prime is 25788227. The reversal of 25788224 is 42288752.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25788227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2312 + ... + 7544.

Almost surely, 2^25788224 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 25788224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31906464).

25788224 is an abundant number, since it is smaller than the sum of its proper divisors (38024704).

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

25788224 is a wasteful number, since it uses less digits than its factorization.

25788224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5263 (or 5253 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The square root of 25788224 is about 5078.2107085075. The cubic root of 25788224 is about 295.4430725873.

The spelling of 25788224 in words is "twenty-five million, seven hundred eighty-eight thousand, two hundred twenty-four".