1232255578289 has 4 divisors (see below), whose sum is σ = 1239063620340. Its totient is φ = 1225447536240.

The previous prime is 1232255578261. The next prime is 1232255578291. The reversal of 1232255578289 is 9828755522321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124162502689 + 1108093075600 = 352367^2 + 1052660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1232255578289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232255578189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3404020754 + ... + 3404021115.

It is an arithmetic number, because the mean of its divisors is an integer number (309765905085).

Almost surely, 2^{1232255578289} is an apocalyptic number.

It is an amenable number.

1232255578289 is a deficient number, since it is larger than the sum of its proper divisors (6808042051).

1232255578289 is an equidigital number, since it uses as much as digits as its factorization.

1232255578289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6808042050.

The product of its digits is 24192000, while the sum is 59.

The spelling of 1232255578289 in words is "one trillion, two hundred thirty-two billion, two hundred fifty-five million, five hundred seventy-eight thousand, two hundred eighty-nine".