22182225 has 24 divisors (see below), whose sum is σ = 39497472. Its totient is φ = 10920000.

The previous prime is 22182197. The next prime is 22182247. The reversal of 22182225 is 52228122.

It is not a de Polignac number, because 22182225 - 2⁹ = 22181713 is a prime.

It is a super-2 number, since 2×22182225² = 984102211901250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22182195 and 22182204.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10401 + ... + 12350.

It is an arithmetic number, because the mean of its divisors is an integer number (1645728).

Almost surely, 2^22182225 is an apocalyptic number.

22182225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22182225 is a deficient number, since it is larger than the sum of its proper divisors (17315247).

22182225 is a wasteful number, since it uses less digits than its factorization.

22182225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22777 (or 22772 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 22182225 is about 4709.8009512080. The cubic root of 22182225 is about 280.9754456494.

The spelling of 22182225 in words is "twenty-two million, one hundred eighty-two thousand, two hundred twenty-five".