11500725880 has 128 divisors (see below), whose sum is σ = 30952627200. Its totient is φ = 3760238592.

The previous prime is 11500725853. The next prime is 11500725881. The reversal of 11500725880 is 8852700511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11500725881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2270791 + ... + 2275849.

It is an arithmetic number, because the mean of its divisors is an integer number (241817400).

Almost surely, 2^11500725880 is an apocalyptic number.

11500725880 is a gapful number since it is divisible by the number (10) 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 11500725880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15476313600).

11500725880 is an abundant number, since it is smaller than the sum of its proper divisors (19451901320).

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

11500725880 is a wasteful number, since it uses less digits than its factorization.

11500725880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453 (or 5449 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 37.

The spelling of 11500725880 in words is "eleven billion, five hundred million, seven hundred twenty-five thousand, eight hundred eighty".