205306530265 has 8 divisors (see below), whose sum is σ = 247160017728. Its totient is φ = 163717103280.

The previous prime is 205306530259. The next prime is 205306530301. The reversal of 205306530265 is 562035603502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205306530265 - 2⁷ = 205306530137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66013407 + ... + 66016516.

It is an arithmetic number, because the mean of its divisors is an integer number (30895002216).

Almost surely, 2^205306530265 is an apocalyptic number.

It is an amenable number.

205306530265 is a deficient number, since it is larger than the sum of its proper divisors (41853487463).

205306530265 is a wasteful number, since it uses less digits than its factorization.

205306530265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132030239.

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 205306530265 in words is "two hundred five billion, three hundred six million, five hundred thirty thousand, two hundred sixty-five".