22102225 has 36 divisors (see below), whose sum is σ = 30236160. Its totient is φ = 16005600.

The previous prime is 22102217. The next prime is 22102237. The reversal of 22102225 is 52220122.

It is not a de Polignac number, because 22102225 - 2³ = 22102217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22102199 and 22102208.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 279736 + ... + 279814.

Almost surely, 2^22102225 is an apocalyptic number.

22102225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22102225 is a deficient number, since it is larger than the sum of its proper divisors (8133935).

22102225 is a wasteful number, since it uses less digits than its factorization.

22102225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 22102225 is about 4701.3003520303. The cubic root of 22102225 is about 280.6372602749.

Adding to 22102225 its reverse (52220122), we get a palindrome (74322347).

The spelling of 22102225 in words is "twenty-two million, one hundred two thousand, two hundred twenty-five".