25565364 has 54 divisors (see below), whose sum is σ = 71044610. Its totient is φ = 7745760.

The previous prime is 25565347. The next prime is 25565377. The reversal of 25565364 is 46356552.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16744464 + 8820900 = 4092^2 + 2970^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1422 + ... + 7290.

Almost surely, 2^25565364 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 25565364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35522305).

25565364 is an abundant number, since it is smaller than the sum of its proper divisors (45479246).

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

25565364 is a wasteful number, since it uses less digits than its factorization.

25565364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5901 (or 5885 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 25565364 is about 5056.2203274778. The cubic root of 25565364 is about 294.5895431156.

The spelling of 25565364 in words is "twenty-five million, five hundred sixty-five thousand, three hundred sixty-four".