206013256225 has 24 divisors (see below), whose sum is σ = 291968614400. Its totient is φ = 141257329920.

The previous prime is 206013256199. The next prime is 206013256249. The reversal of 206013256225 is 522652310602.

It is not a de Polignac number, because 206013256225 - 2⁹ = 206013255713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3998176 + ... + 4049374.

Almost surely, 2^206013256225 is an apocalyptic number.

206013256225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206013256225 is a deficient number, since it is larger than the sum of its proper divisors (85955358175).

206013256225 is a wasteful number, since it uses less digits than its factorization.

206013256225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74209 (or 74204 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 206013256225 its reverse (522652310602), we get a palindrome (728665566827).

The spelling of 206013256225 in words is "two hundred six billion, thirteen million, two hundred fifty-six thousand, two hundred twenty-five".