11156025520 has 80 divisors (see below), whose sum is σ = 26381168640. Its totient is φ = 4386502400.

The previous prime is 11156025499. The next prime is 11156025523. The reversal of 11156025520 is 2552065111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×11156025520³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11156025523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2036385 + ... + 2041855.

It is an arithmetic number, because the mean of its divisors is an integer number (329764608).

Almost surely, 2^11156025520 is an apocalyptic number.

11156025520 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 11156025520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13190584320).

11156025520 is an abundant number, since it is smaller than the sum of its proper divisors (15225143120).

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

11156025520 is a wasteful number, since it uses less digits than its factorization.

11156025520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5914 (or 5908 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 11156025520 in words is "eleven billion, one hundred fifty-six million, twenty-five thousand, five hundred twenty".