205475 has 6 divisors (see below), whose sum is σ = 254820. Its totient is φ = 164360.

The previous prime is 205463. The next prime is 205477. The reversal of 205475 is 574502.

It is not a de Polignac number, because 205475 - 2¹⁶ = 139939 is a prime.

It is an Ulam number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 205475.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 205475.

It is not an unprimeable number, because it can be changed into a prime (205477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4085 + ... + 4134.

It is an arithmetic number, because the mean of its divisors is an integer number (42470).

2²⁰⁵⁴⁷⁵ is an apocalyptic number.

205475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

205475 is a deficient number, since it is larger than the sum of its proper divisors (49345).

205475 is an equidigital number, since it uses as much as digits as its factorization.

205475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8229 (or 8224 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 205475 is about 453.2935031522. The cubic root of 205475 is about 59.0091913288.

Adding to 205475 its reverse (574502), we get a palindrome (779977).

The spelling of 205475 in words is "two hundred five thousand, four hundred seventy-five".