1271225 has 6 divisors (see below), whose sum is σ = 1576350. Its totient is φ = 1016960.

The previous prime is 1271213. The next prime is 1271227. The reversal of 1271225 is 5221721.

It can be written as a sum of positive squares in 3 ways, for example, as 139129 + 1132096 = 373^2 + 1064^2 .

It is not a de Polignac number, because 1271225 - 2⁶ = 1271161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1271197 and 1271206.

It is not an unprimeable number, because it can be changed into a prime (1271227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25400 + ... + 25449.

It is an arithmetic number, because the mean of its divisors is an integer number (262725).

2^1271225 is an apocalyptic number.

It is an amenable number.

1271225 is a deficient number, since it is larger than the sum of its proper divisors (305125).

1271225 is an equidigital number, since it uses as much as digits as its factorization.

1271225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50859 (or 50854 counting only the distinct ones).

The product of its digits is 280, while the sum is 20.

The square root of 1271225 is about 1127.4861418217. The cubic root of 1271225 is about 108.3280207783.

Adding to 1271225 its reverse (5221721), we get a palindrome (6492946).

The spelling of 1271225 in words is "one million, two hundred seventy-one thousand, two hundred twenty-five".