22200225 has 48 divisors (see below), whose sum is σ = 38836800. Its totient is φ = 11173120.

The previous prime is 22200179. The next prime is 22200263. The reversal of 22200225 is 52200222.

It is not a de Polignac number, because 22200225 - 2¹⁴ = 22183841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128239 + ... + 128411.

It is an arithmetic number, because the mean of its divisors is an integer number (809100).

Almost surely, 2^22200225 is an apocalyptic number.

22200225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22200225 is a deficient number, since it is larger than the sum of its proper divisors (16636575).

22200225 is a wasteful number, since it uses less digits than its factorization.

22200225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 22200225 is about 4711.7114724906. The cubic root of 22200225 is about 281.0514252627.

Adding to 22200225 its reverse (52200222), we get a palindrome (74400447).

The spelling of 22200225 in words is "twenty-two million, two hundred thousand, two hundred twenty-five".