225724271665 has 8 divisors (see below), whose sum is σ = 270941054400. Its totient is φ = 180531465072.

The previous prime is 225724271639. The next prime is 225724271671. The reversal of 225724271665 is 566172427522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225724271665 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5973315 + ... + 6010984.

It is an arithmetic number, because the mean of its divisors is an integer number (33867631800).

Almost surely, 2^225724271665 is an apocalyptic number.

It is an amenable number.

225724271665 is a deficient number, since it is larger than the sum of its proper divisors (45216782735).

225724271665 is a wasteful number, since it uses less digits than its factorization.

225724271665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11988071.

The product of its digits is 2822400, while the sum is 49.

The spelling of 225724271665 in words is "two hundred twenty-five billion, seven hundred twenty-four million, two hundred seventy-one thousand, six hundred sixty-five".