206928025 has 12 divisors (see below), whose sum is σ = 262850364. Its totient is φ = 161504000.

The previous prime is 206927989. The next prime is 206928053. The reversal of 206928025 is 520829602.

206928025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 11235904 + 195692121 = 3352^2 + 13989^2 .

It is not a de Polignac number, because 206928025 - 2¹⁹ = 206403737 is a prime.

It is a Duffinian number.

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, 99916 + ... + 101965.

It is an arithmetic number, because the mean of its divisors is an integer number (21904197).

Almost surely, 2^206928025 is an apocalyptic number.

206928025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206928025 is a deficient number, since it is larger than the sum of its proper divisors (55922339).

206928025 is a wasteful number, since it uses less digits than its factorization.

206928025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201932 (or 201927 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 206928025 is about 14384.9930483125. The cubic root of 206928025 is about 591.4796005414.

The spelling of 206928025 in words is "two hundred six million, nine hundred twenty-eight thousand, twenty-five".