206254633225 has 12 divisors (see below), whose sum is σ = 258392405404. Its totient is φ = 163302635520.

The previous prime is 206254633121. The next prime is 206254633243. The reversal of 206254633225 is 522336452602.

It can be written as a sum of positive squares in 6 ways, for example, as 34490804089 + 171763829136 = 185717^2 + 414444^2 .

It is a de Polignac number, because none of the positive numbers 2^k-206254633225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42524304 + ... + 42529153.

Almost surely, 2^206254633225 is an apocalyptic number.

206254633225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206254633225 is a deficient number, since it is larger than the sum of its proper divisors (52137772179).

206254633225 is an equidigital number, since it uses as much as digits as its factorization.

206254633225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85053564 (or 85053559 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 40.

The spelling of 206254633225 in words is "two hundred six billion, two hundred fifty-four million, six hundred thirty-three thousand, two hundred twenty-five".