243343253225 has 12 divisors (see below), whose sum is σ = 302819470620. Its totient is φ = 193981804800.

The previous prime is 243343253207. The next prime is 243343253297. The reversal of 243343253225 is 522352343342.

It can be written as a sum of positive squares in 6 ways, for example, as 43179177616 + 200164075609 = 207796^2 + 447397^2 .

It is not a de Polignac number, because 243343253225 - 2⁶ = 243343253161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17312780 + ... + 17326829.

It is an arithmetic number, because the mean of its divisors is an integer number (25234955885).

Almost surely, 2^243343253225 is an apocalyptic number.

243343253225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243343253225 is a deficient number, since it is larger than the sum of its proper divisors (59476217395).

243343253225 is a wasteful number, since it uses less digits than its factorization.

243343253225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34639900 (or 34639895 counting only the distinct ones).

The product of its digits is 518400, while the sum is 38.

Adding to 243343253225 its reverse (522352343342), we get a palindrome (765695596567).

The spelling of 243343253225 in words is "two hundred forty-three billion, three hundred forty-three million, two hundred fifty-three thousand, two hundred twenty-five".