206006008225 has 6 divisors (see below), whose sum is σ = 255447450230. Its totient is φ = 164804806560.

The previous prime is 206006008171. The next prime is 206006008309. The reversal of 206006008225 is 522800600602.

It can be written as a sum of positive squares in 3 ways, for example, as 27928760161 + 178077248064 = 167119^2 + 421992^2 .

It is not a de Polignac number, because 206006008225 - 2⁷ = 206006008097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4120120140 + ... + 4120120189.

Almost surely, 2^206006008225 is an apocalyptic number.

206006008225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206006008225 is a deficient number, since it is larger than the sum of its proper divisors (49441442005).

206006008225 is an equidigital number, since it uses as much as digits as its factorization.

206006008225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8240240339 (or 8240240334 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 206006008225 its reverse (522800600602), we get a palindrome (728806608827).

The spelling of 206006008225 in words is "two hundred six billion, six million, eight thousand, two hundred twenty-five".