1818325 has 6 divisors (see below), whose sum is σ = 2254754. Its totient is φ = 1454640.

The previous prime is 1818317. The next prime is 1818331. The reversal of 1818325 is 5238181.

1818325 = 953² + 954².

It can be written as a sum of positive squares in 3 ways, for example, as 421201 + 1397124 = 649^2 + 1182^2 .

It is not a de Polignac number, because 1818325 - 2³ = 1818317 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1818293 and 1818302.

It is a congruent number.

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, 36342 + ... + 36391.

2^1818325 is an apocalyptic number.

1818325 is the 954-th centered square number.

It is an amenable number.

1818325 is a deficient number, since it is larger than the sum of its proper divisors (436429).

1818325 is an equidigital number, since it uses as much as digits as its factorization.

1818325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72743 (or 72738 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 1818325 is about 1348.4528171204. The cubic root of 1818325 is about 122.0554482343.

The spelling of 1818325 in words is "one million, eight hundred eighteen thousand, three hundred twenty-five".