20525033880 has 384 divisors, whose sum is σ = 75143577600. Its totient is φ = 5008614912.

The previous prime is 20525033869. The next prime is 20525033887. The reversal of 20525033880 is 8833052502.

20525033880 is a `hidden beast` number, since 20 + 5 + 250 + 3 + 388 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525033887) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16047081 + ... + 16048359.

It is an arithmetic number, because the mean of its divisors is an integer number (195686400).

Almost surely, 2^20525033880 is an apocalyptic number.

20525033880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20525033880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37571788800).

20525033880 is an abundant number, since it is smaller than the sum of its proper divisors (54618543720).

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

20525033880 is a wasteful number, since it uses less digits than its factorization.

20525033880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1429 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 20525033880 in words is "twenty billion, five hundred twenty-five million, thirty-three thousand, eight hundred eighty".