11225137820 has 48 divisors (see below), whose sum is σ = 26205005568. Its totient is φ = 4010964480.

The previous prime is 11225137817. The next prime is 11225137829. The reversal of 11225137820 is 2873152211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11225137829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688289 + ... + 704408.

It is an arithmetic number, because the mean of its divisors is an integer number (545937616).

Almost surely, 2^11225137820 is an apocalyptic number.

11225137820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11225137820 is an abundant number, since it is smaller than the sum of its proper divisors (14979867748).

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

11225137820 is a wasteful number, since it uses less digits than its factorization.

11225137820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392750 (or 1392748 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 11225137820 in words is "eleven billion, two hundred twenty-five million, one hundred thirty-seven thousand, eight hundred twenty".