243245232225 has 48 divisors (see below), whose sum is σ = 447021111040. Its totient is φ = 129681259200.

The previous prime is 243245232211. The next prime is 243245232283. The reversal of 243245232225 is 522232542342.

243245232225 is a `hidden beast` number, since 2 + 4 + 324 + 5 + 2 + 322 + 2 + 5 = 666.

It is not a de Polignac number, because 243245232225 - 2¹² = 243245228129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243245232225.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1735467 + ... + 1870383.

Almost surely, 2^243245232225 is an apocalyptic number.

243245232225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243245232225 is a deficient number, since it is larger than the sum of its proper divisors (203775878815).

243245232225 is a wasteful number, since it uses less digits than its factorization.

243245232225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137607 (or 137596 counting only the distinct ones).

The product of its digits is 230400, while the sum is 36.

Adding to 243245232225 its reverse (522232542342), we get a palindrome (765477774567).

The spelling of 243245232225 in words is "two hundred forty-three billion, two hundred forty-five million, two hundred thirty-two thousand, two hundred twenty-five".