205985275 has 6 divisors (see below), whose sum is σ = 255421772. Its totient is φ = 164788200.

The previous prime is 205985267. The next prime is 205985293. The reversal of 205985275 is 572589502.

It is not a de Polignac number, because 205985275 - 2³ = 205985267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4119681 + ... + 4119730.

Almost surely, 2^205985275 is an apocalyptic number.

205985275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

205985275 is a deficient number, since it is larger than the sum of its proper divisors (49436497).

205985275 is an equidigital number, since it uses as much as digits as its factorization.

205985275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8239421 (or 8239416 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 205985275 is about 14352.1871155584. The cubic root of 205985275 is about 590.5799860247.

The spelling of 205985275 in words is "two hundred five million, nine hundred eighty-five thousand, two hundred seventy-five".