12225439805 has 8 divisors (see below), whose sum is σ = 14712808032. Its totient is φ = 9752165008.

The previous prime is 12225439747. The next prime is 12225439847. The reversal of 12225439805 is 50893452221.

12225439805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12225439805 - 2⁶ = 12225439741 is a prime.

It is a super-2 number, since 2×12225439805² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3521447 + ... + 3524916.

It is an arithmetic number, because the mean of its divisors is an integer number (1839101004).

Almost surely, 2^12225439805 is an apocalyptic number.

It is an amenable number.

12225439805 is a deficient number, since it is larger than the sum of its proper divisors (2487368227).

12225439805 is an equidigital number, since it uses as much as digits as its factorization.

12225439805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7046715.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 12225439805 in words is "twelve billion, two hundred twenty-five million, four hundred thirty-nine thousand, eight hundred five".