1219825 has 12 divisors (see below), whose sum is σ = 1540080. Its totient is φ = 958160.

The previous prime is 1219811. The next prime is 1219831. The reversal of 1219825 is 5289121.

It is not a de Polignac number, because 1219825 - 2⁵ = 1219793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1219793 and 1219802.

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, 1062 + ... + 1888.

It is an arithmetic number, because the mean of its divisors is an integer number (128340).

2^1219825 is an apocalyptic number.

It is an amenable number.

1219825 is a deficient number, since it is larger than the sum of its proper divisors (320255).

1219825 is an equidigital number, since it uses as much as digits as its factorization.

1219825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 891 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The square root of 1219825 is about 1104.4568800999. The cubic root of 1219825 is about 106.8478636803.

The spelling of 1219825 in words is "one million, two hundred nineteen thousand, eight hundred twenty-five".