206843225 has 12 divisors (see below), whose sum is σ = 265330860. Its totient is φ = 159768000.

The previous prime is 206843213. The next prime is 206843239. The reversal of 206843225 is 522348602.

It can be written as a sum of positive squares in 6 ways, for example, as 978121 + 205865104 = 989^2 + 14348^2 .

It is not a de Polignac number, because 206843225 - 2⁸ = 206842969 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 206843191 and 206843200.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 141926 + ... + 143375.

It is an arithmetic number, because the mean of its divisors is an integer number (22110905).

Almost surely, 2^206843225 is an apocalyptic number.

206843225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206843225 is a deficient number, since it is larger than the sum of its proper divisors (58487635).

206843225 is a wasteful number, since it uses less digits than its factorization.

206843225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285340 (or 285335 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 206843225 is about 14382.0452300777. The cubic root of 206843225 is about 591.3987925354.

The spelling of 206843225 in words is "two hundred six million, eight hundred forty-three thousand, two hundred twenty-five".