17992198225 has 27 divisors (see below), whose sum is σ = 22589024913. Its totient is φ = 14216163840.

The previous prime is 17992198207. The next prime is 17992198303. The reversal of 17992198225 is 52289129971.

The square root of 17992198225 is 134135.

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 2893686849 + 15098511376 = 53793^2 + 122876^2 .

It is not a de Polignac number, because 17992198225 - 2¹³ = 17992190033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 93223729 + ... + 93223921.

Almost surely, 2^17992198225 is an apocalyptic number.

17992198225 is the 134135-th square number.

17992198225 is the 67068-th centered octagonal number.

It is an amenable number.

17992198225 is a deficient number, since it is larger than the sum of its proper divisors (4596826688).

17992198225 is an frugal number, since it uses more digits than its factorization.

17992198225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 337 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 55.

It can be divided in two parts, 179 and 92198225, that added together give a square (92198404 = 9602²).

The spelling of 17992198225 in words is "seventeen billion, nine hundred ninety-two million, one hundred ninety-eight thousand, two hundred twenty-five".