20225006420 has 48 divisors (see below), whose sum is σ = 45137046528. Its totient is φ = 7585989120.

The previous prime is 20225006419. The next prime is 20225006423. The reversal of 20225006420 is 2460052202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20225006423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17612 + ... + 201891.

It is an arithmetic number, because the mean of its divisors is an integer number (940355136).

Almost surely, 2^20225006420 is an apocalyptic number.

20225006420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20225006420 is an abundant number, since it is smaller than the sum of its proper divisors (24912040108).

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

20225006420 is a wasteful number, since it uses less digits than its factorization.

20225006420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219800 (or 219798 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20225006420 its reverse (2460052202), we get a palindrome (22685058622).

The spelling of 20225006420 in words is "twenty billion, two hundred twenty-five million, six thousand, four hundred twenty".