225716766331021 has 8 divisors (see below), whose sum is σ = 258264436043264. Its totient is φ = 193244700963600.

The previous prime is 225716766331019. The next prime is 225716766331027. The reversal of 225716766331021 is 120133667617522.

225716766331021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225716766331021 - 2¹ = 225716766331019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225716766331021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225716766331027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18901079805 + ... + 18901091746.

It is an arithmetic number, because the mean of its divisors is an integer number (32283054505408).

Almost surely, 2^{225716766331021} is an apocalyptic number.

It is an amenable number.

225716766331021 is a deficient number, since it is larger than the sum of its proper divisors (32547669712243).

225716766331021 is an equidigital number, since it uses as much as digits as its factorization.

225716766331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37802172411.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 225716766331021 in words is "two hundred twenty-five trillion, seven hundred sixteen billion, seven hundred sixty-six million, three hundred thirty-one thousand, twenty-one".