243422225 has 24 divisors (see below), whose sum is σ = 316080960. Its totient is φ = 185613120.

The previous prime is 243422213. The next prime is 243422233. The reversal of 243422225 is 522224342.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-243422225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243422194 and 243422203.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217367 + ... + 218483.

It is an arithmetic number, because the mean of its divisors is an integer number (13170040).

Almost surely, 2^243422225 is an apocalyptic number.

243422225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243422225 is a deficient number, since it is larger than the sum of its proper divisors (72658735).

243422225 is a wasteful number, since it uses less digits than its factorization.

243422225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1524 counting only the distinct ones).

The product of its digits is 7680, while the sum is 26.

The square root of 243422225 is about 15601.9942635549. The cubic root of 243422225 is about 624.3863630500.

Adding to 243422225 its reverse (522224342), we get a palindrome (765646567).

The spelling of 243422225 in words is "two hundred forty-three million, four hundred twenty-two thousand, two hundred twenty-five".