243225443245 has 8 divisors (see below), whose sum is σ = 292129059960. Its totient is φ = 194408002560.

The previous prime is 243225443239. The next prime is 243225443291. The reversal of 243225443245 is 542344522342.

It can be written as a sum of positive squares in 4 ways, for example, as 8037301801 + 235188141444 = 89651^2 + 484962^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243225443245 - 2²⁵ = 243191888813 is a prime.

It is a super-2 number, since 2×243225443245² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243225443198 and 243225443207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21537796 + ... + 21549085.

It is an arithmetic number, because the mean of its divisors is an integer number (36516132495).

Almost surely, 2^243225443245 is an apocalyptic number.

It is an amenable number.

243225443245 is a deficient number, since it is larger than the sum of its proper divisors (48903616715).

243225443245 is a wasteful number, since it uses less digits than its factorization.

243225443245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43088015.

The product of its digits is 921600, while the sum is 40.

Adding to 243225443245 its reverse (542344522342), we get a palindrome (785569965587).

The spelling of 243225443245 in words is "two hundred forty-three billion, two hundred twenty-five million, four hundred forty-three thousand, two hundred forty-five".