1225798 has 8 divisors (see below), whose sum is σ = 2101392. Its totient is φ = 525336.

The previous prime is 1225787. The next prime is 1225817. The reversal of 1225798 is 8975221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43765 + ... + 43792.

It is an arithmetic number, because the mean of its divisors is an integer number (262674).

2^1225798 is an apocalyptic number.

1225798 is a deficient number, since it is larger than the sum of its proper divisors (875594).

1225798 is an equidigital number, since it uses as much as digits as its factorization.

1225798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87566.

The product of its digits is 10080, while the sum is 34.

The square root of 1225798 is about 1107.1576220214. The cubic root of 1225798 is about 107.0219770271.

The spelling of 1225798 in words is "one million, two hundred twenty-five thousand, seven hundred ninety-eight".