20051525220 has 48 divisors (see below), whose sum is σ = 57449958720. Its totient is φ = 5222722176.

The previous prime is 20051525213. The next prime is 20051525233. The reversal of 20051525220 is 2252515002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3883375 + ... + 3888534.

It is an arithmetic number, because the mean of its divisors is an integer number (1196874140).

Almost surely, 2^20051525220 is an apocalyptic number.

20051525220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20051525220 is an abundant number, since it is smaller than the sum of its proper divisors (37398433500).

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

20051525220 is a wasteful number, since it uses less digits than its factorization.

20051525220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7771964 (or 7771962 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The spelling of 20051525220 in words is "twenty billion, fifty-one million, five hundred twenty-five thousand, two hundred twenty".