225666020256365 has 16 divisors (see below), whose sum is σ = 294355447279488. Its totient is φ = 165088240262976.

The previous prime is 225666020256293. The next prime is 225666020256371. The reversal of 225666020256365 is 563652020666522.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 225666020256365 - 2¹⁰ = 225666020255341 is a prime.

It is a super-2 number, since 2×225666020256365² (a number of 30 digits) contains 22 as substring.

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 225666020256365.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16223287097 + ... + 16223301006.

It is an arithmetic number, because the mean of its divisors is an integer number (18397215454968).

Almost surely, 2^{225666020256365} is an apocalyptic number.

It is an amenable number.

225666020256365 is a deficient number, since it is larger than the sum of its proper divisors (68689427023123).

225666020256365 is a wasteful number, since it uses less digits than its factorization.

225666020256365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32446588228.

The product of its (nonzero) digits is 46656000, while the sum is 56.

The spelling of 225666020256365 in words is "two hundred twenty-five trillion, six hundred sixty-six billion, twenty million, two hundred fifty-six thousand, three hundred sixty-five".