17170171225 has 27 divisors (see below), whose sum is σ = 21646962813. Its totient is φ = 13510232640.

The previous prime is 17170171217. The next prime is 17170171243. The reversal of 17170171225 is 52217107171.

The square root of 17170171225 is 131035.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 93954249 + 17076216976 = 9693^2 + 130676^2 .

It is not a de Polignac number, because 17170171225 - 2³ = 17170171217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 47827596 + ... + 47827954.

Almost surely, 2^17170171225 is an apocalyptic number.

17170171225 is the 131035-th square number.

17170171225 is the 65518-th centered octagonal number.

It is an amenable number.

17170171225 is a deficient number, since it is larger than the sum of its proper divisors (4476791588).

17170171225 is an frugal number, since it uses more digits than its factorization.

17170171225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 34.

Adding to 17170171225 its reverse (52217107171), we get a palindrome (69387278396).

The spelling of 17170171225 in words is "seventeen billion, one hundred seventy million, one hundred seventy-one thousand, two hundred twenty-five".