211313303225 has 6 divisors (see below), whose sum is σ = 262028496030. Its totient is φ = 169050642560.

The previous prime is 211313303203. The next prime is 211313303237. The reversal of 211313303225 is 522303313112.

It can be written as a sum of positive squares in 3 ways, for example, as 34920023161 + 176393280064 = 186869^2 + 419992^2 .

It is not a de Polignac number, because 211313303225 - 2¹⁶ = 211313237689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211313303194 and 211313303203.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4226266040 + ... + 4226266089.

It is an arithmetic number, because the mean of its divisors is an integer number (43671416005).

Almost surely, 2^211313303225 is an apocalyptic number.

211313303225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

211313303225 is a deficient number, since it is larger than the sum of its proper divisors (50715192805).

211313303225 is an equidigital number, since it uses as much as digits as its factorization.

211313303225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8452532139 (or 8452532134 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 211313303225 its reverse (522303313112), we get a palindrome (733616616337).

The spelling of 211313303225 in words is "two hundred eleven billion, three hundred thirteen million, three hundred three thousand, two hundred twenty-five".