205195 has 4 divisors (see below), whose sum is σ = 246240. Its totient is φ = 164152.

The previous prime is 205187. The next prime is 205201. The reversal of 205195 is 591502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 591502 = 2 ⋅295751.

It is a cyclic number.

It is not a de Polignac number, because 205195 - 2³ = 205187 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20515 + ... + 20524.

It is an arithmetic number, because the mean of its divisors is an integer number (61560).

2²⁰⁵¹⁹⁵ is an apocalyptic number.

205195 is a deficient number, since it is larger than the sum of its proper divisors (41045).

205195 is an equidigital number, since it uses as much as digits as its factorization.

205195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41044.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 205195 is about 452.9845471978. The cubic root of 205195 is about 58.9823752776.

Adding to 205195 its reverse (591502), we get a palindrome (796697).

It can be divided in two parts, 205 and 195, that added together give a square (400 = 20²).

The spelling of 205195 in words is "two hundred five thousand, one hundred ninety-five".