12289072505 has 16 divisors (see below), whose sum is σ = 15009753600. Its totient is φ = 9656468160.

The previous prime is 12289072463. The next prime is 12289072513. The reversal of 12289072505 is 50527098221.

It is not a de Polignac number, because 12289072505 - 2⁸ = 12289072249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191276 + ... + 247314.

It is an arithmetic number, because the mean of its divisors is an integer number (938109600).

Almost surely, 2^12289072505 is an apocalyptic number.

It is an amenable number.

12289072505 is a deficient number, since it is larger than the sum of its proper divisors (2720681095).

12289072505 is an equidigital number, since it uses as much as digits as its factorization.

12289072505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56824.

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 12289072505 in words is "twelve billion, two hundred eighty-nine million, seventy-two thousand, five hundred five".