25565022 has 48 divisors (see below), whose sum is σ = 63808992. Its totient is φ = 7246080.

The previous prime is 25565021. The next prime is 25565053. The reversal of 25565022 is 22056552.

25565022 is a `hidden beast` number, since 2 + 5 + 5 + 650 + 2 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25565021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16522 + ... + 18002.

It is an arithmetic number, because the mean of its divisors is an integer number (1329354).

Almost surely, 2^25565022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25565022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31904496).

25565022 is an abundant number, since it is smaller than the sum of its proper divisors (38243970).

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

25565022 is a wasteful number, since it uses less digits than its factorization.

25565022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633 (or 1630 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 25565022 is about 5056.1865076360. The cubic root of 25565022 is about 294.5882294884.

The spelling of 25565022 in words is "twenty-five million, five hundred sixty-five thousand, twenty-two".