20920525110 has 96 divisors (see below), whose sum is σ = 55767452832. Its totient is φ = 5438108160.

The previous prime is 20920525103. The next prime is 20920525121. The reversal of 20920525110 is 1152502902.

20920525110 is a `hidden beast` number, since 2 + 0 + 9 + 20 + 525 + 110 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7478232 + ... + 7481028.

It is an arithmetic number, because the mean of its divisors is an integer number (580910967).

Almost surely, 2^20920525110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20920525110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27883726416).

20920525110 is an abundant number, since it is smaller than the sum of its proper divisors (34846927722).

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

20920525110 is a wasteful number, since it uses less digits than its factorization.

20920525110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878 (or 4875 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 20920525110 in words is "twenty billion, nine hundred twenty million, five hundred twenty-five thousand, one hundred ten".