205033251 has 24 divisors (see below), whose sum is σ = 283536880. Its totient is φ = 131777280.

The previous prime is 205033249. The next prime is 205033267. The reversal of 205033251 is 152330502.

It is not a de Polignac number, because 205033251 - 2¹ = 205033249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205033211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 549501 + ... + 549873.

Almost surely, 2^205033251 is an apocalyptic number.

205033251 is a deficient number, since it is larger than the sum of its proper divisors (78503629).

205033251 is a wasteful number, since it uses less digits than its factorization.

205033251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 205033251 is about 14318.9821914827. The cubic root of 205033251 is about 589.6687319728.

Adding to 205033251 its reverse (152330502), we get a palindrome (357363753).

The spelling of 205033251 in words is "two hundred five million, thirty-three thousand, two hundred fifty-one".