20503225944 has 48 divisors (see below), whose sum is σ = 56820964200. Its totient is φ = 6675467904.

The previous prime is 20503225927. The next prime is 20503225949. The reversal of 20503225944 is 44952230502.

It is a super-2 number, since 2×20503225944² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20503225899 and 20503225908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20503225949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3308149 + ... + 3314340.

Almost surely, 2^20503225944 is an apocalyptic number.

20503225944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20503225944 is an abundant number, since it is smaller than the sum of its proper divisors (36317738256).

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

20503225944 is a wasteful number, since it uses less digits than its factorization.

20503225944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6622544 (or 6622537 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 20503225944 in words is "twenty billion, five hundred three million, two hundred twenty-five thousand, nine hundred forty-four".