206722025 has 12 divisors (see below), whose sum is σ = 257822412. Its totient is φ = 164418240.

The previous prime is 206722013. The next prime is 206722039. The reversal of 206722025 is 520227602.

206722025 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 1545049 + 205176976 = 1243^2 + 14324^2 .

It is not a de Polignac number, because 206722025 - 2⁶ = 206721961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206721985 and 206722003.

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, 19574 + ... + 28223.

It is an arithmetic number, because the mean of its divisors is an integer number (21485201).

Almost surely, 2^206722025 is an apocalyptic number.

206722025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206722025 is a deficient number, since it is larger than the sum of its proper divisors (51100387).

206722025 is a wasteful number, since it uses less digits than its factorization.

206722025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47980 (or 47975 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 206722025 is about 14377.8310255755. The cubic root of 206722025 is about 591.2832597238.

Adding to 206722025 its reverse (520227602), we get a palindrome (726949627).

The spelling of 206722025 in words is "two hundred six million, seven hundred twenty-two thousand, twenty-five".