243215012242025 has 6 divisors (see below), whose sum is σ = 301586615180142. Its totient is φ = 194572009793600.

The previous prime is 243215012242021. The next prime is 243215012242067. The reversal of 243215012242025 is 520242210512342.

243215012242025 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 700296164569 + 242514716077456 = 836837^2 + 15572884^2 .

It is not a de Polignac number, because 243215012242025 - 2² = 243215012242021 is a prime.

It is a super-2 number, since 2×243215012242025² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243215012242021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4864300244816 + ... + 4864300244865.

It is an arithmetic number, because the mean of its divisors is an integer number (50264435863357).

Almost surely, 2^{243215012242025} is an apocalyptic number.

243215012242025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243215012242025 is a deficient number, since it is larger than the sum of its proper divisors (58371602938117).

243215012242025 is an equidigital number, since it uses as much as digits as its factorization.

243215012242025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9728600489691 (or 9728600489686 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 243215012242025 its reverse (520242210512342), we get a palindrome (763457222754367).

The spelling of 243215012242025 in words is "two hundred forty-three trillion, two hundred fifteen billion, twelve million, two hundred forty-two thousand, twenty-five".