225666421317423 has 8 divisors (see below), whose sum is σ = 334320624174000. Its totient is φ = 150444280878264.

The previous prime is 225666421317413. The next prime is 225666421317451. The reversal of 225666421317423 is 324713124666522.

It is not a de Polignac number, because 225666421317423 - 2¹² = 225666421313327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225666421317423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225666421317413) 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, 4179007802148 + ... + 4179007802201.

It is an arithmetic number, because the mean of its divisors is an integer number (41790078021750).

Almost surely, 2^{225666421317423} is an apocalyptic number.

225666421317423 is a deficient number, since it is larger than the sum of its proper divisors (108654202856577).

225666421317423 is an equidigital number, since it uses as much as digits as its factorization.

225666421317423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8358015604358 (or 8358015604352 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 54.

The spelling of 225666421317423 in words is "two hundred twenty-five trillion, six hundred sixty-six billion, four hundred twenty-one million, three hundred seventeen thousand, four hundred twenty-three".