205275249 has 16 divisors (see below), whose sum is σ = 311185600. Its totient is φ = 133666848.

The previous prime is 205275229. The next prime is 205275293. The reversal of 205275249 is 942572502.

It is a happy number.

It is not a de Polignac number, because 205275249 - 2¹⁵ = 205242481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205275209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87244 + ... + 89565.

It is an arithmetic number, because the mean of its divisors is an integer number (19449100).

Almost surely, 2^205275249 is an apocalyptic number.

It is an amenable number.

205275249 is a deficient number, since it is larger than the sum of its proper divisors (105910351).

205275249 is a wasteful number, since it uses less digits than its factorization.

205275249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176861 (or 176855 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 205275249 is about 14327.4299509717. The cubic root of 205275249 is about 589.9006334621.

The spelling of 205275249 in words is "two hundred five million, two hundred seventy-five thousand, two hundred forty-nine".