22144025 has 12 divisors (see below), whose sum is σ = 28904400. Its totient is φ = 16782480.

The previous prime is 22144021. The next prime is 22144049. The reversal of 22144025 is 52044122.

It is a happy number.

It is not a de Polignac number, because 22144025 - 2² = 22144021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22143988 and 22144006.

It is not an unprimeable number, because it can be changed into a prime (22144021) 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, 22835 + ... + 23784.

It is an arithmetic number, because the mean of its divisors is an integer number (2408700).

Almost surely, 2^22144025 is an apocalyptic number.

22144025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22144025 is a deficient number, since it is larger than the sum of its proper divisors (6760375).

22144025 is a wasteful number, since it uses less digits than its factorization.

22144025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46648 (or 46643 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 22144025 is about 4705.7438306818. The cubic root of 22144025 is about 280.8140637445.

Adding to 22144025 its reverse (52044122), we get a palindrome (74188147).

The spelling of 22144025 in words is "twenty-two million, one hundred forty-four thousand, twenty-five".