22423725 has 18 divisors (see below), whose sum is σ = 40163786. Its totient is φ = 11959200.

The previous prime is 22423711. The next prime is 22423729. The reversal of 22423725 is 52732422.

It can be written as a sum of positive squares in 3 ways, for example, as 1602756 + 20820969 = 1266^2 + 4563^2 .

It is not a de Polignac number, because 22423725 - 2⁸ = 22423469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22423729) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 49606 + ... + 50055.

Almost surely, 2^22423725 is an apocalyptic number.

22423725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22423725 is a deficient number, since it is larger than the sum of its proper divisors (17740061).

22423725 is a wasteful number, since it uses less digits than its factorization.

22423725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99677 (or 99669 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 22423725 is about 4735.3695737503. The cubic root of 22423725 is about 281.9914362874.

The spelling of 22423725 in words is "twenty-two million, four hundred twenty-three thousand, seven hundred twenty-five".