11525112220040 has 32 divisors (see below), whose sum is σ = 26825692239000. Its totient is φ = 4451077822464.

The previous prime is 11525112219989. The next prime is 11525112220043. The reversal of 11525112220040 is 4002221152511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7255491734404 + 4269620485636 = 2693602^2 + 2066306^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11525112219991 and 11525112220009.

It is not an unprimeable number, because it can be changed into a prime (11525112220043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4967719625 + ... + 4967721944.

Almost surely, 2^{11525112220040} is an apocalyptic number.

11525112220040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11525112220040 is an abundant number, since it is smaller than the sum of its proper divisors (15300580018960).

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

11525112220040 is a wasteful number, since it uses less digits than its factorization.

11525112220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9935441609 (or 9935441605 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 11525112220040 its reverse (4002221152511), we get a palindrome (15527333372551).

The spelling of 11525112220040 in words is "eleven trillion, five hundred twenty-five billion, one hundred twelve million, two hundred twenty thousand, forty".