1718225 has 6 divisors (see below), whose sum is σ = 2130630. Its totient is φ = 1374560.

The previous prime is 1718219. The next prime is 1718251. The reversal of 1718225 is 5228171.

It can be written as a sum of positive squares in 3 ways, for example, as 163216 + 1555009 = 404^2 + 1247^2 .

It is not a de Polignac number, because 1718225 - 2¹⁴ = 1701841 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1718194 and 1718203.

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, 34340 + ... + 34389.

It is an arithmetic number, because the mean of its divisors is an integer number (355105).

2^1718225 is an apocalyptic number.

It is an amenable number.

1718225 is a deficient number, since it is larger than the sum of its proper divisors (412405).

1718225 is an equidigital number, since it uses as much as digits as its factorization.

1718225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68739 (or 68734 counting only the distinct ones).

The product of its digits is 1120, while the sum is 26.

The square root of 1718225 is about 1310.8108177765. The cubic root of 1718225 is about 119.7732988431.

The spelling of 1718225 in words is "one million, seven hundred eighteen thousand, two hundred twenty-five".