205822135 has 12 divisors (see below), whose sum is σ = 255802248. Its totient is φ = 158976608.

The previous prime is 205822129. The next prime is 205822139. The reversal of 205822135 is 531228502.

It is not a de Polignac number, because 205822135 - 2⁷ = 205822007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205822139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20269 + ... + 28678.

It is an arithmetic number, because the mean of its divisors is an integer number (21316854).

Almost surely, 2^205822135 is an apocalyptic number.

205822135 is a deficient number, since it is larger than the sum of its proper divisors (49980113).

205822135 is an equidigital number, since it uses as much as digits as its factorization.

205822135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49010 (or 48981 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 205822135 is about 14346.5025354614. The cubic root of 205822135 is about 590.4240320522.

The spelling of 205822135 in words is "two hundred five million, eight hundred twenty-two thousand, one hundred thirty-five".