11525423221320 has 128 divisors (see below), whose sum is σ = 34713706291200. Its totient is φ = 3061245479936.

The previous prime is 11525423221307. The next prime is 11525423221321. The reversal of 11525423221320 is 2312232452511.

It is not an unprimeable number, because it can be changed into a prime (11525423221321) 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, 46627897 + ... + 46874423.

It is an arithmetic number, because the mean of its divisors is an integer number (271200830400).

Almost surely, 2^{11525423221320} is an apocalyptic number.

11525423221320 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 11525423221320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17356853145600).

11525423221320 is an abundant number, since it is smaller than the sum of its proper divisors (23188283069880).

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

11525423221320 is a wasteful number, since it uses less digits than its factorization.

11525423221320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248087 (or 248083 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 11525423221320 its reverse (2312232452511), we get a palindrome (13837655673831).

The spelling of 11525423221320 in words is "eleven trillion, five hundred twenty-five billion, four hundred twenty-three million, two hundred twenty-one thousand, three hundred twenty".