243121245325 has 48 divisors (see below), whose sum is σ = 364898252160. Its totient is φ = 156864798720.

The previous prime is 243121245287. The next prime is 243121245331. The reversal of 243121245325 is 523542121342.

It is not a de Polignac number, because 243121245325 - 2¹⁵ = 243121212557 is a prime.

It is a congruent number.

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, 15322246 + ... + 15338104.

It is an arithmetic number, because the mean of its divisors is an integer number (7602046920).

Almost surely, 2^243121245325 is an apocalyptic number.

243121245325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243121245325 is a deficient number, since it is larger than the sum of its proper divisors (121777006835).

243121245325 is a wasteful number, since it uses less digits than its factorization.

243121245325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21046 (or 21041 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

Adding to 243121245325 its reverse (523542121342), we get a palindrome (766663366667).

The spelling of 243121245325 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-five thousand, three hundred twenty-five".