11305125520 has 160 divisors (see below), whose sum is σ = 28859652864. Its totient is φ = 4093286400.

The previous prime is 11305125497. The next prime is 11305125527. The reversal of 11305125520 is 2552150311.

It is not an unprimeable number, because it can be changed into a prime (11305125527) 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, 20896450 + ... + 20896990.

Almost surely, 2^11305125520 is an apocalyptic number.

11305125520 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 11305125520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14429826432).

11305125520 is an abundant number, since it is smaller than the sum of its proper divisors (17554527344).

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

11305125520 is a wasteful number, since it uses less digits than its factorization.

11305125520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 11305125520 its reverse (2552150311), we get a palindrome (13857275831).

The spelling of 11305125520 in words is "eleven billion, three hundred five million, one hundred twenty-five thousand, five hundred twenty".