1225017 has 16 divisors (see below), whose sum is σ = 1848000. Its totient is φ = 801792.

The previous prime is 1225009. The next prime is 1225019. The reversal of 1225017 is 7105221.

It is not a de Polignac number, because 1225017 - 2³ = 1225009 is a prime.

1225017 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1225019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1209 + ... + 1977.

It is an arithmetic number, because the mean of its divisors is an integer number (115500).

2^1225017 is an apocalyptic number.

It is an amenable number.

1225017 is a deficient number, since it is larger than the sum of its proper divisors (622983).

1225017 is an equidigital number, since it uses as much as digits as its factorization.

1225017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 1225017 is about 1106.8048608495. The cubic root of 1225017 is about 106.9992430144. Note that the first 3 decimals are identical.

The spelling of 1225017 in words is "one million, two hundred twenty-five thousand, seventeen".