1225804 has 18 divisors (see below), whose sum is σ = 2275980. Its totient is φ = 576072.

The previous prime is 1225787. The next prime is 1225817. The reversal of 1225804 is 4085221.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

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, 9589 + ... + 9715.

2^1225804 is an apocalyptic number.

It is an amenable number.

1225804 is a deficient number, since it is larger than the sum of its proper divisors (1050176).

1225804 is a wasteful number, since it uses less digits than its factorization.

1225804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1225804 is about 1107.1603316593. The cubic root of 1225804 is about 107.0221516428.

The spelling of 1225804 in words is "one million, two hundred twenty-five thousand, eight hundred four".