225320716321 has 8 divisors (see below), whose sum is σ = 226062532800. Its totient is φ = 224579011440.

The previous prime is 225320716319. The next prime is 225320716381. The reversal of 225320716321 is 123617023522.

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

It is a cyclic number.

It is not a de Polignac number, because 225320716321 - 2¹ = 225320716319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225320716381) 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, 6519675 + ... + 6554143.

It is an arithmetic number, because the mean of its divisors is an integer number (28257816600).

Almost surely, 2^225320716321 is an apocalyptic number.

It is an amenable number.

225320716321 is a deficient number, since it is larger than the sum of its proper divisors (741816479).

225320716321 is a wasteful number, since it uses less digits than its factorization.

225320716321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55799.

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 225320716321 its reverse (123617023522), we get a palindrome (348937739843).

The spelling of 225320716321 in words is "two hundred twenty-five billion, three hundred twenty million, seven hundred sixteen thousand, three hundred twenty-one".