205975265 has 4 divisors (see below), whose sum is σ = 247170324. Its totient is φ = 164780208.

The previous prime is 205975249. The next prime is 205975271. The reversal of 205975265 is 562579502.

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

It can be written as a sum of positive squares in 2 ways, for example, as 62742241 + 143233024 = 7921^2 + 11968^2 .

It is a cyclic number.

It is not a de Polignac number, because 205975265 - 2⁴ = 205975249 is a prime.

It is a Duffinian 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, 20597522 + ... + 20597531.

It is an arithmetic number, because the mean of its divisors is an integer number (61792581).

Almost surely, 2^205975265 is an apocalyptic number.

It is an amenable number.

205975265 is a deficient number, since it is larger than the sum of its proper divisors (41195059).

205975265 is an equidigital number, since it uses as much as digits as its factorization.

205975265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41195058.

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 205975265 is about 14351.8383839841. The cubic root of 205975265 is about 590.5704193191.

The spelling of 205975265 in words is "two hundred five million, nine hundred seventy-five thousand, two hundred sixty-five".