205229305 has 4 divisors (see below), whose sum is σ = 246275172. Its totient is φ = 164183440.

The previous prime is 205229291. The next prime is 205229341. The reversal of 205229305 is 503922502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 161722089 + 43507216 = 12717^2 + 6596^2 .

It is not a de Polignac number, because 205229305 - 2⁷ = 205229177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20522926 + ... + 20522935.

It is an arithmetic number, because the mean of its divisors is an integer number (61568793).

Almost surely, 2^205229305 is an apocalyptic number.

It is an amenable number.

205229305 is a deficient number, since it is larger than the sum of its proper divisors (41045867).

205229305 is an equidigital number, since it uses as much as digits as its factorization.

205229305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41045866.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 205229305 is about 14325.8265032074. The cubic root of 205229305 is about 589.8566203349.

The spelling of 205229305 in words is "two hundred five million, two hundred twenty-nine thousand, three hundred five".