22044025 has 24 divisors (see below), whose sum is σ = 28283904. Its totient is φ = 17035200.

The previous prime is 22044017. The next prime is 22044049. The reversal of 22044025 is 52044022.

It is not a de Polignac number, because 22044025 - 2³ = 22044017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22043993 and 22044011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168210 + ... + 168340.

It is an arithmetic number, because the mean of its divisors is an integer number (1178496).

Almost surely, 2^22044025 is an apocalyptic number.

22044025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22044025 is a deficient number, since it is larger than the sum of its proper divisors (6239879).

22044025 is a wasteful number, since it uses less digits than its factorization.

22044025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 22044025 is about 4695.1064950648. The cubic root of 22044025 is about 280.3907172872.

Adding to 22044025 its reverse (52044022), we get a palindrome (74088047).

The spelling of 22044025 in words is "twenty-two million, forty-four thousand, twenty-five".