205224985 has 24 divisors (see below), whose sum is σ = 301561920. Its totient is φ = 133316064.

The previous prime is 205224931. The next prime is 205224989. The reversal of 205224985 is 589422502.

It is not a de Polignac number, because 205224985 - 2⁹ = 205224473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205224989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17389 + ... + 26698.

It is an arithmetic number, because the mean of its divisors is an integer number (12565080).

Almost surely, 2^205224985 is an apocalyptic number.

It is an amenable number.

205224985 is a deficient number, since it is larger than the sum of its proper divisors (96336935).

205224985 is a wasteful number, since it uses less digits than its factorization.

205224985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44125 (or 44118 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 205224985 is about 14325.6757257729. The cubic root of 205224985 is about 589.8524815522.

The spelling of 205224985 in words is "two hundred five million, two hundred twenty-four thousand, nine hundred eighty-five".