1225313 has 4 divisors (see below), whose sum is σ = 1227540. Its totient is φ = 1223088.

The previous prime is 1225303. The next prime is 1225319. The reversal of 1225313 is 3135221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1151329 + 73984 = 1073^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225313 - 2⁴ = 1225297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1225291 and 1225300.

It is not an unprimeable number, because it can be changed into a prime (1225319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383 + ... + 1611.

It is an arithmetic number, because the mean of its divisors is an integer number (306885).

2^1225313 is an apocalyptic number.

It is an amenable number.

1225313 is a deficient number, since it is larger than the sum of its proper divisors (2227).

1225313 is an equidigital number, since it uses as much as digits as its factorization.

1225313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226.

The product of its digits is 180, while the sum is 17.

The square root of 1225313 is about 1106.9385710147. The cubic root of 1225313 is about 107.0078603711.

The spelling of 1225313 in words is "one million, two hundred twenty-five thousand, three hundred thirteen".