20332225155 has 16 divisors (see below), whose sum is σ = 35488975104. Its totient is φ = 9858048480.

The previous prime is 20332225153. The next prime is 20332225169. The reversal of 20332225155 is 55152223302.

It is not a de Polignac number, because 20332225155 - 2¹ = 20332225153 is a prime.

It is a super-2 number, since 2×20332225155² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20332225153) 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 15 ways as a sum of consecutive naturals, for example, 61612639 + ... + 61612968.

It is an arithmetic number, because the mean of its divisors is an integer number (2218060944).

Almost surely, 2^20332225155 is an apocalyptic number.

20332225155 is a deficient number, since it is larger than the sum of its proper divisors (15156749949).

20332225155 is a wasteful number, since it uses less digits than its factorization.

20332225155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123225626.

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 20332225155 its reverse (55152223302), we get a palindrome (75484448457).

The spelling of 20332225155 in words is "twenty billion, three hundred thirty-two million, two hundred twenty-five thousand, one hundred fifty-five".