20225044140 has 48 divisors (see below), whose sum is σ = 64720142592. Its totient is φ = 4622867136.

The previous prime is 20225044139. The next prime is 20225044157. The reversal of 20225044140 is 4144052202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20225044140.

It is an unprimeable number.

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, 24077014 + ... + 24077853.

It is an arithmetic number, because the mean of its divisors is an integer number (1348336304).

Almost surely, 2^20225044140 is an apocalyptic number.

20225044140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20225044140 is an abundant number, since it is smaller than the sum of its proper divisors (44495098452).

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

20225044140 is a wasteful number, since it uses less digits than its factorization.

20225044140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48154886 (or 48154884 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 20225044140 its reverse (4144052202), we get a palindrome (24369096342).

The spelling of 20225044140 in words is "twenty billion, two hundred twenty-five million, forty-four thousand, one hundred forty".