22125444 has 48 divisors (see below), whose sum is σ = 58146816. Its totient is φ = 6487200.

The previous prime is 22125437. The next prime is 22125469. The reversal of 22125444 is 44452122.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1389 + ... + 6795.

It is an arithmetic number, because the mean of its divisors is an integer number (1211392).

Almost surely, 2^22125444 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 22125444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29073408).

22125444 is an abundant number, since it is smaller than the sum of its proper divisors (36021372).

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

22125444 is a wasteful number, since it uses less digits than its factorization.

22125444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5456 (or 5454 counting only the distinct ones).

The product of its digits is 2560, while the sum is 24.

The square root of 22125444 is about 4703.7691269874. The cubic root of 22125444 is about 280.7354982892.

Adding to 22125444 its reverse (44452122), we get a palindrome (66577566).

The spelling of 22125444 in words is "twenty-two million, one hundred twenty-five thousand, four hundred forty-four".