22105025 has 6 divisors (see below), whose sum is σ = 27410262. Its totient is φ = 17684000.

The previous prime is 22104991. The next prime is 22105043. The reversal of 22105025 is 52050122.

It can be written as a sum of positive squares in 3 ways, for example, as 908209 + 21196816 = 953^2 + 4604^2 .

It is not a de Polignac number, because 22105025 - 2¹⁴ = 22088641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22104994 and 22105012.

It is an unprimeable number.

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, 442076 + ... + 442125.

It is an arithmetic number, because the mean of its divisors is an integer number (4568377).

Almost surely, 2^22105025 is an apocalyptic number.

22105025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22105025 is a deficient number, since it is larger than the sum of its proper divisors (5305237).

22105025 is an equidigital number, since it uses as much as digits as its factorization.

22105025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884211 (or 884206 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 22105025 is about 4701.5981325503. The cubic root of 22105025 is about 280.6491105320.

Adding to 22105025 its reverse (52050122), we get a palindrome (74155147).

The spelling of 22105025 in words is "twenty-two million, one hundred five thousand, twenty-five".