243251205325 has 48 divisors (see below), whose sum is σ = 320747328000. Its totient is φ = 182705644800.

The previous prime is 243251205319. The next prime is 243251205343. The reversal of 243251205325 is 523502152342.

It is not a de Polignac number, because 243251205325 - 2²³ = 243242816717 is a prime.

It is a super-2 number, since 2×243251205325² (a number of 24 digits) contains 22 as substring.

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, 4940931 + ... + 4989919.

It is an arithmetic number, because the mean of its divisors is an integer number (6682236000).

Almost surely, 2^243251205325 is an apocalyptic number.

243251205325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243251205325 is a deficient number, since it is larger than the sum of its proper divisors (77496122675).

243251205325 is a wasteful number, since it uses less digits than its factorization.

243251205325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49222 (or 49217 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 243251205325 its reverse (523502152342), we get a palindrome (766753357667).

The spelling of 243251205325 in words is "two hundred forty-three billion, two hundred fifty-one million, two hundred five thousand, three hundred twenty-five".