22427725 has 24 divisors (see below), whose sum is σ = 29418752. Its totient is φ = 16934400.

The previous prime is 22427723. The next prime is 22427749. The reversal of 22427725 is 52772422.

It is not a de Polignac number, because 22427725 - 2¹ = 22427723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22427723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32989 + ... + 33661.

Almost surely, 2^22427725 is an apocalyptic number.

22427725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22427725 is a deficient number, since it is larger than the sum of its proper divisors (6991027).

22427725 is a wasteful number, since it uses less digits than its factorization.

22427725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 752 counting only the distinct ones).

The product of its digits is 15680, while the sum is 31.

The square root of 22427725 is about 4735.7919084352. The cubic root of 22427725 is about 282.0082027358.

The spelling of 22427725 in words is "twenty-two million, four hundred twenty-seven thousand, seven hundred twenty-five".