211335225 has 24 divisors (see below), whose sum is σ = 350504352. Its totient is φ = 112358400.

The previous prime is 211335203. The next prime is 211335251. The reversal of 211335225 is 522533112.

It is a happy number.

It is not a de Polignac number, because 211335225 - 2⁸ = 211334969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211335195 and 211335204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20569 + ... + 29081.

It is an arithmetic number, because the mean of its divisors is an integer number (14604348).

Almost surely, 2^211335225 is an apocalyptic number.

211335225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

211335225 is a deficient number, since it is larger than the sum of its proper divisors (139169127).

211335225 is a wasteful number, since it uses less digits than its factorization.

211335225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8857 (or 8852 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 211335225 is about 14537.3733872388. The cubic root of 211335225 is about 595.6492923804.

Adding to 211335225 its reverse (522533112), we get a palindrome (733868337).

The spelling of 211335225 in words is "two hundred eleven million, three hundred thirty-five thousand, two hundred twenty-five".