20552225232 has 320 divisors, whose sum is σ = 67952793600. Its totient is φ = 5306112000.

The previous prime is 20552225203. The next prime is 20552225233. The reversal of 20552225232 is 23252225502.

It is a self number, because there is not a number n which added to its sum of digits gives 20552225232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552225233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51252232 + ... + 51252632.

It is an arithmetic number, because the mean of its divisors is an integer number (212352480).

Almost surely, 2^20552225232 is an apocalyptic number.

20552225232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20552225232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33976396800).

20552225232 is an abundant number, since it is smaller than the sum of its proper divisors (47400568368).

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

20552225232 is a wasteful number, since it uses less digits than its factorization.

20552225232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The spelling of 20552225232 in words is "twenty billion, five hundred fifty-two million, two hundred twenty-five thousand, two hundred thirty-two".