225331443165645 has 16 divisors (see below), whose sum is σ = 400589232294720. Its totient is φ = 120176769688272.

The previous prime is 225331443165637. The next prime is 225331443165677. The reversal of 225331443165645 is 546561344133522.

225331443165645 is a `hidden beast` number, since 2 + 2 + 5 + 3 + 3 + 1 + 44 + 31 + 6 + 564 + 5 = 666.

It is not a de Polignac number, because 225331443165645 - 2³ = 225331443165637 is a prime.

It is a super-3 number, since 3×225331443165645³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 225331443165591 and 225331443165600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834560900479 + ... + 834560900748.

It is an arithmetic number, because the mean of its divisors is an integer number (25036827018420).

Almost surely, 2^{225331443165645} is an apocalyptic number.

It is an amenable number.

225331443165645 is a deficient number, since it is larger than the sum of its proper divisors (175257789129075).

225331443165645 is a wasteful number, since it uses less digits than its factorization.

225331443165645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669121801241 (or 1669121801235 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 54.

The spelling of 225331443165645 in words is "two hundred twenty-five trillion, three hundred thirty-one billion, four hundred forty-three million, one hundred sixty-five thousand, six hundred forty-five".