205161275 has 12 divisors (see below), whose sum is σ = 277527624. Its totient is φ = 149208000.

The previous prime is 205161269. The next prime is 205161277. The reversal of 205161275 is 572161502.

205161275 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205161275 - 2⁶ = 205161211 is a prime.

It is a super-2 number, since 2×205161275² = 84182297519251250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (205161277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 372746 + ... + 373295.

It is an arithmetic number, because the mean of its divisors is an integer number (23127302).

Almost surely, 2^205161275 is an apocalyptic number.

205161275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

205161275 is a deficient number, since it is larger than the sum of its proper divisors (72366349).

205161275 is a wasteful number, since it uses less digits than its factorization.

205161275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746062 (or 746057 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 205161275 is about 14323.4519233319. The cubic root of 205161275 is about 589.7914373427.

The spelling of 205161275 in words is "two hundred five million, one hundred sixty-one thousand, two hundred seventy-five".