1198225 has 24 divisors (see below), whose sum is σ = 1749888. Its totient is φ = 796800.

The previous prime is 1198217. The next prime is 1198229. The reversal of 1198225 is 5228911.

It is not a de Polignac number, because 1198225 - 2³ = 1198217 is a prime.

It is a nialpdrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 1198193 and 1198202.

It is not an unprimeable number, because it can be changed into a prime (1198229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7092 + ... + 7258.

It is an arithmetic number, because the mean of its divisors is an integer number (72912).

2^1198225 is an apocalyptic number.

It is an amenable number.

1198225 is a deficient number, since it is larger than the sum of its proper divisors (551663).

1198225 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (1198224) it forms an eRAP, since the sums of their prime factors are consecutive (224 and 225).

1198225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 220 counting only the distinct ones).

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

The square root of 1198225 is about 1094.6346422437. The cubic root of 1198225 is about 106.2134360923.

The spelling of 1198225 in words is "one million, one hundred ninety-eight thousand, two hundred twenty-five".