22438925 has 6 divisors (see below), whose sum is σ = 27824298. Its totient is φ = 17951120.

The previous prime is 22438921. The next prime is 22438951. The reversal of 22438925 is 52983422.

It can be written as a sum of positive squares in 3 ways, for example, as 37636 + 22401289 = 194^2 + 4733^2 .

It is not a de Polignac number, because 22438925 - 2² = 22438921 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 (22438921) 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 5 ways as a sum of consecutive naturals, for example, 448754 + ... + 448803.

It is an arithmetic number, because the mean of its divisors is an integer number (4637383).

Almost surely, 2^22438925 is an apocalyptic number.

22438925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22438925 is a deficient number, since it is larger than the sum of its proper divisors (5385373).

22438925 is an equidigital number, since it uses as much as digits as its factorization.

22438925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897567 (or 897562 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 22438925 is about 4736.9742452329. The cubic root of 22438925 is about 282.0551381881.

The spelling of 22438925 in words is "twenty-two million, four hundred thirty-eight thousand, nine hundred twenty-five".