205143250 has 128 divisors (see below), whose sum is σ = 452874240. Its totient is φ = 68889600.

The previous prime is 205143241. The next prime is 205143269. The reversal of 205143250 is 52341502.

205143250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2596711 + ... + 2596789.

It is an arithmetic number, because the mean of its divisors is an integer number (3538080).

Almost surely, 2^205143250 is an apocalyptic number.

205143250 is an abundant number, since it is smaller than the sum of its proper divisors (247730990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205143250 is a wasteful number, since it uses less digits than its factorization.

205143250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 205143250 is about 14322.8226966614. The cubic root of 205143250 is about 589.7741642616.

Adding to 205143250 its reverse (52341502), we get a palindrome (257484752).

The spelling of 205143250 in words is "two hundred five million, one hundred forty-three thousand, two hundred fifty".