205012 has 12 divisors (see below), whose sum is σ = 362880. Its totient is φ = 101336.

The previous prime is 204983. The next prime is 205019. The reversal of 205012 is 210502.

It is a self number, because there is not a number n which added to its sum of digits gives 205012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189 + ... + 667.

It is an arithmetic number, because the mean of its divisors is an integer number (30240).

2²⁰⁵⁰¹² is an apocalyptic number.

It is an amenable number.

205012 is a deficient number, since it is larger than the sum of its proper divisors (157868).

205012 is a wasteful number, since it uses less digits than its factorization.

205012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 205012 is about 452.7825084961. The cubic root of 205012 is about 58.9648358882.

Adding to 205012 its reverse (210502), we get a palindrome (415514).

It can be divided in two parts, 20501 and 2, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 205012 in words is "two hundred five thousand, twelve".