206525220 has 72 divisors (see below), whose sum is σ = 635642112. Its totient is φ = 50064960.

The previous prime is 206525219. The next prime is 206525233. The reversal of 206525220 is 22525602.

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 23 ways as a sum of consecutive naturals, for example, 6964 + ... + 21483.

Almost surely, 2^206525220 is an apocalyptic number.

206525220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206525220 is an abundant number, since it is smaller than the sum of its proper divisors (429116892).

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

206525220 is a wasteful number, since it uses less digits than its factorization.

206525220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28481 (or 28468 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 206525220 is about 14370.9853524384. The cubic root of 206525220 is about 591.0955608887.

The spelling of 206525220 in words is "two hundred six million, five hundred twenty-five thousand, two hundred twenty".