1279224225 has 48 divisors (see below), whose sum is σ = 2365146240. Its totient is φ = 677851200.

The previous prime is 1279224217. The next prime is 1279224227. The reversal of 1279224225 is 5224229721.

It is a happy number.

1279224225 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1279224225 - 2³ = 1279224217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1279224225.

It is not an unprimeable number, because it can be changed into a prime (1279224227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99940 + ... + 112010.

It is an arithmetic number, because the mean of its divisors is an integer number (49273880).

Almost surely, 2^1279224225 is an apocalyptic number.

1279224225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1279224225 is a deficient number, since it is larger than the sum of its proper divisors (1085922015).

1279224225 is a wasteful number, since it uses less digits than its factorization.

1279224225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12247 (or 12236 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1279224225 is about 35766.2442115467. The cubic root of 1279224225 is about 1085.5476505037.

The spelling of 1279224225 in words is "one billion, two hundred seventy-nine million, two hundred twenty-four thousand, two hundred twenty-five".