1218325 has 6 divisors (see below), whose sum is σ = 1510754. Its totient is φ = 974640.

The previous prime is 1218313. The next prime is 1218367. The reversal of 1218325 is 5238121.

It can be written as a sum of positive squares in 3 ways, for example, as 165649 + 1052676 = 407^2 + 1026^2 .

It is not a de Polignac number, because 1218325 - 2⁷ = 1218197 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 = 1218296 and 1218305.

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, 24342 + ... + 24391.

2^1218325 is an apocalyptic number.

It is an amenable number.

1218325 is a deficient number, since it is larger than the sum of its proper divisors (292429).

1218325 is an equidigital number, since it uses as much as digits as its factorization.

1218325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48743 (or 48738 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 1218325 is about 1103.7776044113. Note that the first 3 decimals coincide. The cubic root of 1218325 is about 106.8040493258.

The spelling of 1218325 in words is "one million, two hundred eighteen thousand, three hundred twenty-five".