7218325522 has 8 divisors (see below), whose sum is σ = 10835801856. Its totient is φ = 3606391572.

The previous prime is 7218325507. The next prime is 7218325529. The reversal of 7218325522 is 2255238127.

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

It is not an unprimeable number, because it can be changed into a prime (7218325529) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1382338 + ... + 1387549.

It is an arithmetic number, because the mean of its divisors is an integer number (1354475232).

Almost surely, 2^7218325522 is an apocalyptic number.

7218325522 is a deficient number, since it is larger than the sum of its proper divisors (3617476334).

7218325522 is a wasteful number, since it uses less digits than its factorization.

7218325522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771192.

The product of its digits is 67200, while the sum is 37.

The square root of 7218325522 is about 84960.7292930092. The cubic root of 7218325522 is about 1932.6156309943.

The spelling of 7218325522 in words is "seven billion, two hundred eighteen million, three hundred twenty-five thousand, five hundred twenty-two".