206723025 has 36 divisors (see below), whose sum is σ = 379311660. Its totient is φ = 107558400.

The previous prime is 206723017. The next prime is 206723029. The reversal of 206723025 is 520327602.

206723025 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 30338064 + 176384961 = 5508^2 + 13281^2 .

It is not a de Polignac number, because 206723025 - 2³ = 206723017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206723025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206723029) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1980 + ... + 20429.

It is an arithmetic number, because the mean of its divisors is an integer number (10536435).

Almost surely, 2^206723025 is an apocalyptic number.

206723025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206723025 is a deficient number, since it is larger than the sum of its proper divisors (172588635).

206723025 is a wasteful number, since it uses less digits than its factorization.

206723025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22466 (or 22458 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 206723025 is about 14377.8658012933. The cubic root of 206723025 is about 591.2842131495.

The spelling of 206723025 in words is "two hundred six million, seven hundred twenty-three thousand, twenty-five".