11525518000 has 40 divisors (see below), whose sum is σ = 27868707360. Its totient is φ = 4610206400.

The previous prime is 11525517979. The next prime is 11525518001. The reversal of 11525518000 is 81552511.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 11525518000.

It is not an unprimeable number, because it can be changed into a prime (11525518001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2879380 + ... + 2883379.

It is an arithmetic number, because the mean of its divisors is an integer number (696717684).

Almost surely, 2^11525518000 is an apocalyptic number.

11525518000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11525518000 is an abundant number, since it is smaller than the sum of its proper divisors (16343189360).

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

11525518000 is an equidigital number, since it uses as much as digits as its factorization.

11525518000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5762782 (or 5762766 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 28.

The spelling of 11525518000 in words is "eleven billion, five hundred twenty-five million, five hundred eighteen thousand".