20225820736 has 56 divisors (see below), whose sum is σ = 44104108896. Its totient is φ = 9126405120.

The previous prime is 20225820683. The next prime is 20225820749. The reversal of 20225820736 is 63702852202.

It is a junction number, because it is equal to n+sod(n) for n = 20225820695 and 20225820704.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8406 + ... + 201301.

Almost surely, 2^20225820736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20225820736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22052054448).

20225820736 is an abundant number, since it is smaller than the sum of its proper divisors (23878288160).

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

20225820736 is a wasteful number, since it uses less digits than its factorization.

20225820736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209867 (or 209857 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 20225820736 in words is "twenty billion, two hundred twenty-five million, eight hundred twenty thousand, seven hundred thirty-six".