243232215025 has 6 divisors (see below), whose sum is σ = 301607946662. Its totient is φ = 194585772000.

The previous prime is 243232215007. The next prime is 243232215029. The reversal of 243232215025 is 520512232342.

243232215025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 544942336 + 242687272689 = 23344^2 + 492633^2 .

It is a de Polignac number, because none of the positive numbers 2^k-243232215025 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243232215029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4864644276 + ... + 4864644325.

Almost surely, 2^243232215025 is an apocalyptic number.

243232215025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243232215025 is a deficient number, since it is larger than the sum of its proper divisors (58375731637).

243232215025 is an equidigital number, since it uses as much as digits as its factorization.

243232215025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9729288611 (or 9729288606 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 243232215025 its reverse (520512232342), we get a palindrome (763744447367).

The spelling of 243232215025 in words is "two hundred forty-three billion, two hundred thirty-two million, two hundred fifteen thousand, twenty-five".