22605025 has 6 divisors (see below), whose sum is σ = 28030262. Its totient is φ = 18084000.

The previous prime is 22604999. The next prime is 22605059. The reversal of 22605025 is 52050622.

It can be written as a sum of positive squares in 3 ways, for example, as 6796449 + 15808576 = 2607^2 + 3976^2 .

It is not a de Polignac number, because 22605025 - 2⁵ = 22604993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22604987 and 22605005.

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 5 ways as a sum of consecutive naturals, for example, 452076 + ... + 452125.

Almost surely, 2^22605025 is an apocalyptic number.

22605025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22605025 is a deficient number, since it is larger than the sum of its proper divisors (5425237).

22605025 is an equidigital number, since it uses as much as digits as its factorization.

22605025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904211 (or 904206 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 22605025 is about 4754.4742085745. The cubic root of 22605025 is about 282.7493816897.

Adding to 22605025 its reverse (52050622), we get a palindrome (74655647).

The spelling of 22605025 in words is "twenty-two million, six hundred five thousand, twenty-five".