1279225273 has 12 divisors (see below), whose sum is σ = 1313032320. Its totient is φ = 1246254632.

The previous prime is 1279225237. The next prime is 1279225279. The reversal of 1279225273 is 3725229721.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1279225273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1279225279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 526740 + ... + 529162.

It is an arithmetic number, because the mean of its divisors is an integer number (109419360).

Almost surely, 2^1279225273 is an apocalyptic number.

It is an amenable number.

1279225273 is a deficient number, since it is larger than the sum of its proper divisors (33807047).

1279225273 is an equidigital number, since it uses as much as digits as its factorization.

1279225273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756 (or 2709 counting only the distinct ones).

The product of its digits is 105840, while the sum is 40.

The square root of 1279225273 is about 35766.2588622294. The cubic root of 1279225273 is about 1085.5479469473.

The spelling of 1279225273 in words is "one billion, two hundred seventy-nine million, two hundred twenty-five thousand, two hundred seventy-three".