22725456 has 80 divisors (see below), whose sum is σ = 64162560. Its totient is φ = 6888960.

The previous prime is 22725431. The next prime is 22725497. The reversal of 22725456 is 65452722.

It is a congruent 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, 49066 + ... + 49526.

It is an arithmetic number, because the mean of its divisors is an integer number (802032).

Almost surely, 2^22725456 is an apocalyptic number.

22725456 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22725456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32081280).

22725456 is an abundant number, since it is smaller than the sum of its proper divisors (41437104).

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

22725456 is a wasteful number, since it uses less digits than its factorization.

22725456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 558 counting only the distinct ones).

The product of its digits is 33600, while the sum is 33.

The square root of 22725456 is about 4767.1224024562. The cubic root of 22725456 is about 283.2506197619.

The spelling of 22725456 in words is "twenty-two million, seven hundred twenty-five thousand, four hundred fifty-six".