17973424225 has 9 divisors (see below), whose sum is σ = 22287877273. Its totient is φ = 14378203120.

The previous prime is 17973424193. The next prime is 17973424229. The reversal of 17973424225 is 52242437971.

The square root of 17973424225 is 134065.

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 224790049 + 17748634176 = 14993^2 + 133224^2 .

It is not a de Polignac number, because 17973424225 - 2⁵ = 17973424193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17973424229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 656919 + ... + 683731.

Almost surely, 2^17973424225 is an apocalyptic number.

17973424225 is the 134065-th square number.

17973424225 is the 67033-rd centered octagonal number.

It is an amenable number.

17973424225 is a deficient number, since it is larger than the sum of its proper divisors (4314453048).

17973424225 is an frugal number, since it uses more digits than its factorization.

17973424225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53636 (or 26818 counting only the distinct ones).

The product of its digits is 846720, while the sum is 46.

The spelling of 17973424225 in words is "seventeen billion, nine hundred seventy-three million, four hundred twenty-four thousand, two hundred twenty-five".