22225405521 has 32 divisors (see below), whose sum is σ = 32449360896. Its totient is φ = 13419432000.

The previous prime is 22225405493. The next prime is 22225405541. The reversal of 22225405521 is 12550452222.

It is not a de Polignac number, because 22225405521 - 2¹⁰ = 22225404497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22225405541) 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 31 ways as a sum of consecutive naturals, for example, 18818551 + ... + 18819731.

It is an arithmetic number, because the mean of its divisors is an integer number (1014042528).

Almost surely, 2^22225405521 is an apocalyptic number.

It is an amenable number.

22225405521 is a deficient number, since it is larger than the sum of its proper divisors (10223955375).

22225405521 is a wasteful number, since it uses less digits than its factorization.

22225405521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853.

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 22225405521 its reverse (12550452222), we get a palindrome (34775857743).

The spelling of 22225405521 in words is "twenty-two billion, two hundred twenty-five million, four hundred five thousand, five hundred twenty-one".