12271225 has 6 divisors (see below), whose sum is σ = 15216350. Its totient is φ = 9816960.

The previous prime is 12271219. The next prime is 12271247. The reversal of 12271225 is 52217221.

It can be written as a sum of positive squares in 3 ways, for example, as 28224 + 12243001 = 168^2 + 3499^2 .

It is not a de Polignac number, because 12271225 - 2¹⁷ = 12140153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12271196 and 12271205.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 245400 + ... + 245449.

Almost surely, 2^12271225 is an apocalyptic number.

It is an amenable number.

12271225 is a deficient number, since it is larger than the sum of its proper divisors (2945125).

12271225 is an equidigital number, since it uses as much as digits as its factorization.

12271225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490859 (or 490854 counting only the distinct ones).

The product of its digits is 560, while the sum is 22.

The square root of 12271225 is about 3503.0308305809. The cubic root of 12271225 is about 230.6548758921.

Adding to 12271225 its reverse (52217221), we get a palindrome (64488446).

The spelling of 12271225 in words is "twelve million, two hundred seventy-one thousand, two hundred twenty-five".