17245872424225 has 27 divisors (see below), whose sum is σ = 21797374066489. Its totient is φ = 13535519098400.

The previous prime is 17245872424219. The next prime is 17245872424229. The reversal of 17245872424225 is 52242427854271.

The square root of 17245872424225 is 4152815.

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 129911947489 + 17115960476736 = 360433^2 + 4137144^2 .

It is a de Polignac number, because none of the positive numbers 2^k-17245872424225 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17245872424229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1100488140 + ... + 1100503810.

Almost surely, 2^{17245872424225} is an apocalyptic number.

17245872424225 is the 4152815-th square number.

17245872424225 is the 2076408-th centered octagonal number.

It is an amenable number.

17245872424225 is a deficient number, since it is larger than the sum of its proper divisors (4551501642264).

17245872424225 is an frugal number, since it uses more digits than its factorization.

17245872424225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31458 (or 15729 counting only the distinct ones).

The product of its digits is 20070400, while the sum is 55.

The spelling of 17245872424225 in words is "seventeen trillion, two hundred forty-five billion, eight hundred seventy-two million, four hundred twenty-four thousand, two hundred twenty-five".