1225279326 has 16 divisors (see below), whose sum is σ = 2451237264. Its totient is φ = 408313344.

The previous prime is 1225279273. The next prime is 1225279343. The reversal of 1225279326 is 6239725221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3075 + ... + 49598.

It is an arithmetic number, because the mean of its divisors is an integer number (153202329).

Almost surely, 2^1225279326 is an apocalyptic number.

1225279326 is an abundant number, since it is smaller than the sum of its proper divisors (1225957938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225279326 is a wasteful number, since it uses less digits than its factorization.

1225279326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56555.

The product of its digits is 90720, while the sum is 39.

The square root of 1225279326 is about 35003.9901439822. The cubic root of 1225279326 is about 1070.0688010030.

The spelling of 1225279326 in words is "one billion, two hundred twenty-five million, two hundred seventy-nine thousand, three hundred twenty-six".