1304225 has 12 divisors (see below), whose sum is σ = 1742076. Its totient is φ = 962880.

The previous prime is 1304221. The next prime is 1304227. The reversal of 1304225 is 5224031.

It can be written as a sum of positive squares in 6 ways, for example, as 29584 + 1274641 = 172^2 + 1129^2 .

It is not a de Polignac number, because 1304225 - 2² = 1304221 is a prime.

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304221) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1682 + ... + 2331.

It is an arithmetic number, because the mean of its divisors is an integer number (145173).

2^1304225 is an apocalyptic number.

It is an amenable number.

1304225 is a deficient number, since it is larger than the sum of its proper divisors (437851).

1304225 is a wasteful number, since it uses less digits than its factorization.

1304225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036 (or 4031 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1304225 is about 1142.0267072184. The cubic root of 1304225 is about 109.2573946788.

Adding to 1304225 its reverse (5224031), we get a palindrome (6528256).

The spelling of 1304225 in words is "one million, three hundred four thousand, two hundred twenty-five".