204522225 has 24 divisors (see below), whose sum is σ = 338749152. Its totient is φ = 108883200.

The previous prime is 204522211. The next prime is 204522229. The reversal of 204522225 is 522225402.

It is a happy number.

It is not a de Polignac number, because 204522225 - 2⁶ = 204522161 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 204522195 and 204522204.

It is not an unprimeable number, because it can be changed into a prime (204522229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46105 + ... + 50345.

It is an arithmetic number, because the mean of its divisors is an integer number (14114548).

Almost surely, 2^204522225 is an apocalyptic number.

204522225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204522225 is a deficient number, since it is larger than the sum of its proper divisors (134226927).

204522225 is a wasteful number, since it uses less digits than its factorization.

204522225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4897 (or 4892 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 204522225 is about 14301.1267038650. The cubic root of 204522225 is about 589.1784265390.

Adding to 204522225 its reverse (522225402), we get a palindrome (726747627).

The spelling of 204522225 in words is "two hundred four million, five hundred twenty-two thousand, two hundred twenty-five".