19715242834225 has 27 divisors (see below), whose sum is σ = 25126532554851. Its totient is φ = 15345279360000.

The previous prime is 19715242834193. The next prime is 19715242834241. The reversal of 19715242834225 is 52243824251791.

The square root of 19715242834225 is 4440185.

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

It can be written as a sum of positive squares in 13 ways, for example, as 8421180313329 + 11294062520896 = 2901927^2 + 3360664^2 .

It is not a de Polignac number, because 19715242834225 - 2⁵ = 19715242834193 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, 821422225 + ... + 821446225.

Almost surely, 2^{19715242834225} is an apocalyptic number.

19715242834225 is the 4440185-th square number.

19715242834225 is the 2220093-rd centered octagonal number.

It is an amenable number.

19715242834225 is a deficient number, since it is larger than the sum of its proper divisors (5411289720626).

19715242834225 is an frugal number, since it uses more digits than its factorization.

19715242834225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48086 (or 24043 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 55.

The spelling of 19715242834225 in words is "nineteen trillion, seven hundred fifteen billion, two hundred forty-two million, eight hundred thirty-four thousand, two hundred twenty-five".