225666648853843 has 16 divisors (see below), whose sum is σ = 234423998645760. Its totient is φ = 216974403072000.

The previous prime is 225666648853823. The next prime is 225666648853847. The reversal of 225666648853843 is 348358846666522.

It is a de Polignac number, because none of the positive numbers 2^k-225666648853843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225666648853843.

It is not an unprimeable number, because it can be changed into a prime (225666648853847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239511118 + ... + 240451468.

It is an arithmetic number, because the mean of its divisors is an integer number (14651499915360).

Almost surely, 2^{225666648853843} is an apocalyptic number.

225666648853843 is a deficient number, since it is larger than the sum of its proper divisors (8757349791917).

225666648853843 is a wasteful number, since it uses less digits than its factorization.

225666648853843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974958.

The product of its digits is 9555148800, while the sum is 76.

The spelling of 225666648853843 in words is "two hundred twenty-five trillion, six hundred sixty-six billion, six hundred forty-eight million, eight hundred fifty-three thousand, eight hundred forty-three".