205235105 has 8 divisors (see below), whose sum is σ = 246904872. Its totient is φ = 163772928.

The previous prime is 205235089. The next prime is 205235111. The reversal of 205235105 is 501532502.

205235105 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 4 ways, for example, as 22877089 + 182358016 = 4783^2 + 13504^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205235105 - 2⁴ = 205235089 is a prime.

It is a super-2 number, since 2×205235105² = 84242896648722050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49712 + ... + 53681.

It is an arithmetic number, because the mean of its divisors is an integer number (30863109).

Almost surely, 2^205235105 is an apocalyptic number.

It is an amenable number.

205235105 is a deficient number, since it is larger than the sum of its proper divisors (41669767).

205235105 is a wasteful number, since it uses less digits than its factorization.

205235105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103795.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 205235105 is about 14326.0289333786. The cubic root of 205235105 is about 589.8621769426.

Adding to 205235105 its reverse (501532502), we get a palindrome (706767607).

The spelling of 205235105 in words is "two hundred five million, two hundred thirty-five thousand, one hundred five".