1218025 has 12 divisors (see below), whose sum is σ = 1531152. Its totient is φ = 961040.

The previous prime is 1218017. The next prime is 1218043. The reversal of 1218025 is 5208121.

It is not a de Polignac number, because 1218025 - 2³ = 1218017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1217993 and 1218011.

It is an unprimeable number.

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, 1782 + ... + 2368.

It is an arithmetic number, because the mean of its divisors is an integer number (127596).

2^1218025 is an apocalyptic number.

It is an amenable number.

1218025 is a deficient number, since it is larger than the sum of its proper divisors (313127).

1218025 is an equidigital number, since it uses as much as digits as its factorization.

1218025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 675 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1218025 is about 1103.6416991035. The cubic root of 1218025 is about 106.7952821400.

The spelling of 1218025 in words is "one million, two hundred eighteen thousand, twenty-five".