22025412 has 48 divisors (see below), whose sum is σ = 57657600. Its totient is φ = 7270560.

The previous prime is 22025383. The next prime is 22025429. The reversal of 22025412 is 21452022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10837 + ... + 12707.

It is an arithmetic number, because the mean of its divisors is an integer number (1201200).

Almost surely, 2^22025412 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 22025412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28828800).

22025412 is an abundant number, since it is smaller than the sum of its proper divisors (35632188).

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

22025412 is a wasteful number, since it uses less digits than its factorization.

22025412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993 (or 1985 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 22025412 is about 4693.1239063123. The cubic root of 22025412 is about 280.3117785577.

Adding to 22025412 its reverse (21452022), we get a palindrome (43477434).

The spelling of 22025412 in words is "twenty-two million, twenty-five thousand, four hundred twelve".