22438425 has 12 divisors (see below), whose sum is σ = 37098320. Its totient is φ = 11967120.

The previous prime is 22438421. The next prime is 22438433. The reversal of 22438425 is 52483422.

It is not a de Polignac number, because 22438425 - 2² = 22438421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22438392 and 22438401.

It is not an unprimeable number, because it can be changed into a prime (22438421) 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 11 ways as a sum of consecutive naturals, for example, 149515 + ... + 149664.

Almost surely, 2^22438425 is an apocalyptic number.

22438425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22438425 is a deficient number, since it is larger than the sum of its proper divisors (14659895).

22438425 is a wasteful number, since it uses less digits than its factorization.

22438425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299192 (or 299187 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 22438425 is about 4736.9214686334. The cubic root of 22438425 is about 282.0530431885.

The spelling of 22438425 in words is "twenty-two million, four hundred thirty-eight thousand, four hundred twenty-five".