322225520 has 20 divisors (see below), whose sum is σ = 749174520. Its totient is φ = 128890176.

The previous prime is 322225493. The next prime is 322225523. The reversal of 322225520 is 25522223.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322225523) 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, 2013830 + ... + 2013989.

It is an arithmetic number, because the mean of its divisors is an integer number (37458726).

Almost surely, 2^322225520 is an apocalyptic number.

It is an amenable number.

322225520 is an abundant number, since it is smaller than the sum of its proper divisors (426949000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

322225520 is a wasteful number, since it uses less digits than its factorization.

322225520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4027832 (or 4027826 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 322225520 is about 17950.6412141739. The cubic root of 322225520 is about 685.5723775456.

Adding to 322225520 its reverse (25522223), we get a palindrome (347747743).

The spelling of 322225520 in words is "three hundred twenty-two million, two hundred twenty-five thousand, five hundred twenty".