11525424220 has 48 divisors (see below), whose sum is σ = 24358894560. Its totient is φ = 4580637696.

The previous prime is 11525424199. The next prime is 11525424257. The reversal of 11525424220 is 2242452511.

It is a happy number.

It is a congruent number.

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, 2434816 + ... + 2439544.

It is an arithmetic number, because the mean of its divisors is an integer number (507476970).

Almost surely, 2^11525424220 is an apocalyptic number.

11525424220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11525424220 is an abundant number, since it is smaller than the sum of its proper divisors (12833470340).

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

11525424220 is a wasteful number, since it uses less digits than its factorization.

11525424220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5494 (or 5492 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 11525424220 its reverse (2242452511), we get a palindrome (13767876731).

The spelling of 11525424220 in words is "eleven billion, five hundred twenty-five million, four hundred twenty-four thousand, two hundred twenty".