1306225 has 6 divisors (see below), whose sum is σ = 1619750. Its totient is φ = 1044960.

The previous prime is 1306223. The next prime is 1306237. The reversal of 1306225 is 5226031.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 13456 + 1292769 = 116^2 + 1137^2 .

It is not a de Polignac number, because 1306225 - 2¹ = 1306223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1306223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26100 + ... + 26149.

2^1306225 is an apocalyptic number.

It is an amenable number.

1306225 is a deficient number, since it is larger than the sum of its proper divisors (313525).

1306225 is an equidigital number, since it uses as much as digits as its factorization.

1306225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52259 (or 52254 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1306225 is about 1142.9020080479. The cubic root of 1306225 is about 109.3132140833.

The spelling of 1306225 in words is "one million, three hundred six thousand, two hundred twenty-five".