5664661803025 has 27 divisors (see below), whose sum is σ = 7044707446641. Its totient is φ = 4518524897280.

The previous prime is 5664661803023. The next prime is 5664661803049. The reversal of 5664661803025 is 5203081664665.

The square root of 5664661803025 is 2380055.

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 350917618689 + 5313744184336 = 592383^2 + 2305156^2 .

It is not a de Polignac number, because 5664661803025 - 2¹ = 5664661803023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5664661803023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7366269841 + ... + 7366270609.

Almost surely, 2^{5664661803025} is an apocalyptic number.

5664661803025 is the 2380055-th square number.

5664661803025 is the 1190028-th centered octagonal number.

It is an amenable number.

5664661803025 is a deficient number, since it is larger than the sum of its proper divisors (1380045643616).

5664661803025 is an frugal number, since it uses more digits than its factorization.

5664661803025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786 (or 1393 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 52.

The spelling of 5664661803025 in words is "five trillion, six hundred sixty-four billion, six hundred sixty-one million, eight hundred three thousand, twenty-five".