213288796225 has 12 divisors (see below), whose sum is σ = 265088924716. Its totient is φ = 170236961280.

The previous prime is 213288796211. The next prime is 213288796249. The reversal of 213288796225 is 522697882312.

It is a Cunningham number, because it is equal to 461832²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1 + 213288796224 = 1^2 + 461832^2 .

It is not a de Polignac number, because 213288796225 - 2¹¹ = 213288794177 is a prime.

It is a super-2 number, since 2×213288796225² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9840852 + ... + 9862501.

Almost surely, 2^213288796225 is an apocalyptic number.

213288796225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213288796225 is a deficient number, since it is larger than the sum of its proper divisors (51800128491).

213288796225 is a wasteful number, since it uses less digits than its factorization.

213288796225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19703796 (or 19703791 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The spelling of 213288796225 in words is "two hundred thirteen billion, two hundred eighty-eight million, seven hundred ninety-six thousand, two hundred twenty-five".