1225846 has 4 divisors (see below), whose sum is σ = 1838772. Its totient is φ = 612922.

The previous prime is 1225817. The next prime is 1225849. The reversal of 1225846 is 6485221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6485221 = 59 ⋅109919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225849) by changing a digit.

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 as a sum of consecutive naturals, namely, 306460 + ... + 306463.

It is an arithmetic number, because the mean of its divisors is an integer number (459693).

2^1225846 is an apocalyptic number.

1225846 is a deficient number, since it is larger than the sum of its proper divisors (612926).

1225846 is an equidigital number, since it uses as much as digits as its factorization.

1225846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612925.

The product of its digits is 3840, while the sum is 28.

The square root of 1225846 is about 1107.1792989394. The cubic root of 1225846 is about 107.0233739369.

The spelling of 1225846 in words is "one million, two hundred twenty-five thousand, eight hundred forty-six".