17078506738225 has 27 divisors (see below), whose sum is σ = 22496815467777. Its totient is φ = 12858846468480.

The previous prime is 17078506738187. The next prime is 17078506738273. The reversal of 17078506738225 is 52283760587071.

It is a happy number.

The square root of 17078506738225 is 4132615.

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 399483410209 + 16679023328016 = 632047^2 + 4083996^2 .

It is not a de Polignac number, because 17078506738225 - 2¹¹ = 17078506736177 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, 351247966 + ... + 351296584.

Almost surely, 2^{17078506738225} is an apocalyptic number.

17078506738225 is the 4132615-th square number.

17078506738225 is the 2066308-th centered octagonal number.

It is an amenable number.

17078506738225 is a deficient number, since it is larger than the sum of its proper divisors (5418308729552).

17078506738225 is an frugal number, since it uses more digits than its factorization.

17078506738225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97282 (or 48641 counting only the distinct ones).

The product of its (nonzero) digits is 39513600, while the sum is 61.

The spelling of 17078506738225 in words is "seventeen trillion, seventy-eight billion, five hundred six million, seven hundred thirty-eight thousand, two hundred twenty-five".