204106225 has 6 divisors (see below), whose sum is σ = 253091750. Its totient is φ = 163284960.

The previous prime is 204106223. The next prime is 204106283. The reversal of 204106225 is 522601402.

204106225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 12588304 + 191517921 = 3548^2 + 13839^2 .

It is not a de Polignac number, because 204106225 - 2¹ = 204106223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204106196 and 204106205.

It is not an unprimeable number, because it can be changed into a prime (204106223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4082100 + ... + 4082149.

Almost surely, 2^204106225 is an apocalyptic number.

204106225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204106225 is a deficient number, since it is larger than the sum of its proper divisors (48985525).

204106225 is an equidigital number, since it uses as much as digits as its factorization.

204106225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8164259 (or 8164254 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 204106225 is about 14286.5749919286. The cubic root of 204106225 is about 588.7786906981.

Adding to 204106225 its reverse (522601402), we get a palindrome (726707627).

The spelling of 204106225 in words is "two hundred four million, one hundred six thousand, two hundred twenty-five".