205205235 has 16 divisors (see below), whose sum is σ = 331581600. Its totient is φ = 108358400.

The previous prime is 205205233. The next prime is 205205237. The reversal of 205205235 is 532502502.

It is an interprime number because it is at equal distance from previous prime (205205233) and next prime (205205237).

It is not a de Polignac number, because 205205235 - 2¹ = 205205233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205205233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66210 + ... + 69239.

It is an arithmetic number, because the mean of its divisors is an integer number (20723850).

Almost surely, 2^205205235 is an apocalyptic number.

205205235 is a deficient number, since it is larger than the sum of its proper divisors (126376365).

205205235 is a wasteful number, since it uses less digits than its factorization.

205205235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135558.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 205205235 is about 14324.9863874281. The cubic root of 205205235 is about 589.8335592944.

Adding to 205205235 its reverse (532502502), we get a palindrome (737707737).

The spelling of 205205235 in words is "two hundred five million, two hundred five thousand, two hundred thirty-five".