22424004025 has 12 divisors (see below), whose sum is σ = 27959393644. Its totient is φ = 17840088000.

The previous prime is 22424003981. The next prime is 22424004059. The reversal of 22424004025 is 52040042422.

It can be written as a sum of positive squares in 6 ways, for example, as 7170024976 + 15253979049 = 84676^2 + 123507^2 .

It is not a de Polignac number, because 22424004025 - 2⁷ = 22424003897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2473266 + ... + 2482315.

Almost surely, 2^22424004025 is an apocalyptic number.

22424004025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22424004025 is a deficient number, since it is larger than the sum of its proper divisors (5535389619).

22424004025 is a wasteful number, since it uses less digits than its factorization.

22424004025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4955772 (or 4955767 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 22424004025 its reverse (52040042422), we get a palindrome (74464046447).

The spelling of 22424004025 in words is "twenty-two billion, four hundred twenty-four million, four thousand, twenty-five".