22625720 has 48 divisors (see below), whose sum is σ = 55141560. Its totient is φ = 8351616.

The previous prime is 22625719. The next prime is 22625731. The reversal of 22625720 is 2752622.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 22625720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5087 + ... + 8433.

Almost surely, 2^22625720 is an apocalyptic number.

22625720 is a gapful number since it is divisible by the number (20) 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 22625720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27570780).

22625720 is an abundant number, since it is smaller than the sum of its proper divisors (32515840).

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

22625720 is a wasteful number, since it uses less digits than its factorization.

22625720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384 (or 3367 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 22625720 is about 4756.6500817277. The cubic root of 22625720 is about 282.8356414730.

The spelling of 22625720 in words is "twenty-two million, six hundred twenty-five thousand, seven hundred twenty".