320225501 has 4 divisors (see below), whose sum is σ = 320469600. Its totient is φ = 319981404.

The previous prime is 320225497. The next prime is 320225513. The reversal of 320225501 is 105522023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320225501 - 2² = 320225497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320225551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120071 + ... + 122708.

It is an arithmetic number, because the mean of its divisors is an integer number (80117400).

Almost surely, 2^320225501 is an apocalyptic number.

It is an amenable number.

320225501 is a deficient number, since it is larger than the sum of its proper divisors (244099).

320225501 is a wasteful number, since it uses less digits than its factorization.

320225501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244098.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 320225501 is about 17894.8456545453. The cubic root of 320225501 is about 684.1510081477.

Adding to 320225501 its reverse (105522023), we get a palindrome (425747524).

The spelling of 320225501 in words is "three hundred twenty million, two hundred twenty-five thousand, five hundred one".