22425624 has 144 divisors (see below), whose sum is σ = 69942600. Its totient is φ = 6469632.

The previous prime is 22425619. The next prime is 22425649. The reversal of 22425624 is 42652422.

It is a happy number.

It is a super-2 number, since 2×22425624² = 1005817223578752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 231144 + ... + 231240.

Almost surely, 2^22425624 is an apocalyptic number.

22425624 is a gapful number since it is divisible by the number (24) 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 22425624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34971300).

22425624 is an abundant number, since it is smaller than the sum of its proper divisors (47516976).

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

22425624 is a wasteful number, since it uses less digits than its factorization.

22425624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 134 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 22425624 is about 4735.5700818381. The cubic root of 22425624 is about 281.9993964073. Note that the first 3 decimals are identical.

The spelling of 22425624 in words is "twenty-two million, four hundred twenty-five thousand, six hundred twenty-four".