5666561250625 has 20 divisors (see below), whose sum is σ = 7724656306224. Its totient is φ = 4121135450000.

The previous prime is 5666561250587. The next prime is 5666561250659. The reversal of 5666561250625 is 5260521656665.

It is not a de Polignac number, because 5666561250625 - 2⁴¹ = 3467537995073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 412106671 + ... + 412120420.

Almost surely, 2^{5666561250625} is an apocalyptic number.

5666561250625 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5666561250625 is a deficient number, since it is larger than the sum of its proper divisors (2058095055599).

5666561250625 is an equidigital number, since it uses as much as digits as its factorization.

5666561250625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824227122 (or 824227107 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 55.

The spelling of 5666561250625 in words is "five trillion, six hundred sixty-six billion, five hundred sixty-one million, two hundred fifty thousand, six hundred twenty-five".