11525144520 has 64 divisors (see below), whose sum is σ = 36078721920. Its totient is φ = 2939746304.

The previous prime is 11525144513. The next prime is 11525144549. The reversal of 11525144520 is 2544152511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2085129 + ... + 2090648.

It is an arithmetic number, because the mean of its divisors is an integer number (563730030).

Almost surely, 2^11525144520 is an apocalyptic number.

11525144520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11525144520 is an abundant number, since it is smaller than the sum of its proper divisors (24553577400).

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

11525144520 is a wasteful number, since it uses less digits than its factorization.

11525144520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175814 (or 4175810 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The spelling of 11525144520 in words is "eleven billion, five hundred twenty-five million, one hundred forty-four thousand, five hundred twenty".