22727425 has 18 divisors (see below), whose sum is σ = 32784918. Its totient is φ = 15583680.

The previous prime is 22727399. The next prime is 22727429. The reversal of 22727425 is 52472722.

It can be written as a sum of positive squares in 3 ways, for example, as 3136 + 22724289 = 56^2 + 4767^2 .

It is not a de Polignac number, because 22727425 - 2¹⁵ = 22694657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22727429) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 8052 + ... + 10501.

Almost surely, 2^22727425 is an apocalyptic number.

22727425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22727425 is a deficient number, since it is larger than the sum of its proper divisors (10057493).

22727425 is a wasteful number, since it uses less digits than its factorization.

22727425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18577 (or 18565 counting only the distinct ones).

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

The square root of 22727425 is about 4767.3289166996. The cubic root of 22727425 is about 283.2588000798.

The spelling of 22727425 in words is "twenty-two million, seven hundred twenty-seven thousand, four hundred twenty-five".