205272065 has 8 divisors (see below), whose sum is σ = 246813480. Its totient is φ = 163892992.

The previous prime is 205272043. The next prime is 205272083. The reversal of 205272065 is 560272502.

It can be written as a sum of positive squares in 4 ways, for example, as 121969936 + 83302129 = 11044^2 + 9127^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 205272065 - 2¹² = 205267969 is a prime.

It is a Curzon 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, 37784 + ... + 42873.

It is an arithmetic number, because the mean of its divisors is an integer number (30851685).

Almost surely, 2^205272065 is an apocalyptic number.

It is an amenable number.

205272065 is a deficient number, since it is larger than the sum of its proper divisors (41541415).

205272065 is an equidigital number, since it uses as much as digits as its factorization.

205272065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81171.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 205272065 is about 14327.3188350089. The cubic root of 205272065 is about 589.8975834868.

The spelling of 205272065 in words is "two hundred five million, two hundred seventy-two thousand, sixty-five".