1709225 has 12 divisors (see below), whose sum is σ = 2422464. Its totient is φ = 1171920.

The previous prime is 1709209. The next prime is 1709233. The reversal of 1709225 is 5229071.

It is not a de Polignac number, because 1709225 - 2⁴ = 1709209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1709194 and 1709203.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4709 + ... + 5058.

It is an arithmetic number, because the mean of its divisors is an integer number (201872).

2^1709225 is an apocalyptic number.

It is an amenable number.

1709225 is a deficient number, since it is larger than the sum of its proper divisors (713239).

1709225 is an equidigital number, since it uses as much as digits as its factorization.

1709225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9784 (or 9779 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1709225 is about 1307.3733208231. The cubic root of 1709225 is about 119.5638099247.

The spelling of 1709225 in words is "one million, seven hundred nine thousand, two hundred twenty-five".