205116259 has 4 divisors (see below), whose sum is σ = 206249680. Its totient is φ = 203982840.

The previous prime is 205116251. The next prime is 205116269. The reversal of 205116259 is 952611502.

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

It is a cyclic number.

It is not a de Polignac number, because 205116259 - 2³ = 205116251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205116259.

It is not an unprimeable number, because it can be changed into a prime (205116251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566439 + ... + 566800.

It is an arithmetic number, because the mean of its divisors is an integer number (51562420).

Almost surely, 2^205116259 is an apocalyptic number.

205116259 is a deficient number, since it is larger than the sum of its proper divisors (1133421).

205116259 is a wasteful number, since it uses less digits than its factorization.

205116259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133420.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 205116259 is about 14321.8804282119. The cubic root of 205116259 is about 589.7482973082.

The spelling of 205116259 in words is "two hundred five million, one hundred sixteen thousand, two hundred fifty-nine".