205461265 has 4 divisors (see below), whose sum is σ = 246553524. Its totient is φ = 164369008.

The previous prime is 205461239. The next prime is 205461281. The reversal of 205461265 is 562164502.

205461265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 25472209 + 179989056 = 5047^2 + 13416^2 .

It is a cyclic number.

It is not a de Polignac number, because 205461265 - 2⁹ = 205460753 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 20546122 + ... + 20546131.

It is an arithmetic number, because the mean of its divisors is an integer number (61638381).

Almost surely, 2^205461265 is an apocalyptic number.

It is an amenable number.

205461265 is a deficient number, since it is larger than the sum of its proper divisors (41092259).

205461265 is an equidigital number, since it uses as much as digits as its factorization.

205461265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41092258.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 205461265 is about 14333.9200848895. The cubic root of 205461265 is about 590.0787647406.

The spelling of 205461265 in words is "two hundred five million, four hundred sixty-one thousand, two hundred sixty-five".