5546660868225 has 81 divisors (see below), whose sum is σ = 9997916194747. Its totient is φ = 2939509937280.

The previous prime is 5546660868187. The next prime is 5546660868227. The reversal of 5546660868225 is 5228680666455.

The square root of 5546660868225 is 2355135.

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 483134816241 + 5063526051984 = 695079^2 + 2250228^2 .

It is not a de Polignac number, because 5546660868225 - 2²⁹ = 5546123997313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5546660868227) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 6959423527 + ... + 6959424323.

Almost surely, 2^{5546660868225} is an apocalyptic number.

5546660868225 is the 2355135-th square number.

5546660868225 is the 1177568-th centered octagonal number.

It is an amenable number.

5546660868225 is a deficient number, since it is larger than the sum of its proper divisors (4451255326522).

5546660868225 is an frugal number, since it uses more digits than its factorization.

5546660868225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 165888000, while the sum is 63.

The spelling of 5546660868225 in words is "five trillion, five hundred forty-six billion, six hundred sixty million, eight hundred sixty-eight thousand, two hundred twenty-five".