205205411 has 2 divisors, whose sum is σ = 205205412. Its totient is φ = 205205410.

The previous prime is 205205393. The next prime is 205205443. The reversal of 205205411 is 114502502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205205411 - 2²⁶ = 138096547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (205207411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102602705 + 102602706.

It is an arithmetic number, because the mean of its divisors is an integer number (102602706).

Almost surely, 2^205205411 is an apocalyptic number.

205205411 is a deficient number, since it is larger than the sum of its proper divisors (1).

205205411 is an equidigital number, since it uses as much as digits as its factorization.

205205411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 205205411 is about 14324.9925305391. The cubic root of 205205411 is about 589.8337279235.

Adding to 205205411 its reverse (114502502), we get a palindrome (319707913).

The spelling of 205205411 in words is "two hundred five million, two hundred five thousand, four hundred eleven".