1279225 has 6 divisors (see below), whose sum is σ = 1586270. Its totient is φ = 1023360.

The previous prime is 1279211. The next prime is 1279249. The reversal of 1279225 is 5229721.

It can be written as a sum of positive squares in 3 ways, for example, as 64 + 1279161 = 8^2 + 1131^2 .

It is not a de Polignac number, because 1279225 - 2⁵ = 1279193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1279193 and 1279202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25560 + ... + 25609.

2^1279225 is an apocalyptic number.

It is an amenable number.

1279225 is a deficient number, since it is larger than the sum of its proper divisors (307045).

1279225 is an equidigital number, since it uses as much as digits as its factorization.

1279225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51179 (or 51174 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 1279225 is about 1131.0282931916. The cubic root of 1279225 is about 108.5547869725.

The spelling of 1279225 in words is "one million, two hundred seventy-nine thousand, two hundred twenty-five".