11525030440 has 128 divisors (see below), whose sum is σ = 33735813120. Its totient is φ = 3436012800.

The previous prime is 11525030399. The next prime is 11525030449. The reversal of 11525030440 is 4403052511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11525030449) 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, 10506 + ... + 152185.

It is an arithmetic number, because the mean of its divisors is an integer number (263561040).

Almost surely, 2^11525030440 is an apocalyptic number.

11525030440 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 11525030440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16867906560).

11525030440 is an abundant number, since it is smaller than the sum of its proper divisors (22210782680).

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

11525030440 is a wasteful number, since it uses less digits than its factorization.

11525030440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162743 (or 162739 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 11525030440 its reverse (4403052511), we get a palindrome (15928082951).

The spelling of 11525030440 in words is "eleven billion, five hundred twenty-five million, thirty thousand, four hundred forty".