206831825 has 12 divisors (see below), whose sum is σ = 256650240. Its totient is φ = 165350160.

The previous prime is 206831803. The next prime is 206831837. The reversal of 206831825 is 528138602.

It is not a de Polignac number, because 206831825 - 2¹⁰ = 206830801 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65636 + ... + 68714.

It is an arithmetic number, because the mean of its divisors is an integer number (21387520).

Almost surely, 2^206831825 is an apocalyptic number.

206831825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206831825 is a deficient number, since it is larger than the sum of its proper divisors (49818415).

206831825 is a wasteful number, since it uses less digits than its factorization.

206831825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776 (or 5771 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 206831825 is about 14381.6488971189. The cubic root of 206831825 is about 591.3879275109.

The spelling of 206831825 in words is "two hundred six million, eight hundred thirty-one thousand, eight hundred twenty-five".