12225154520 has 16 divisors (see below), whose sum is σ = 27506597760. Its totient is φ = 4890061792.

The previous prime is 12225154507. The next prime is 12225154523. The reversal of 12225154520 is 2545152221.

It is a happy number.

12225154520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225154523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152814392 + ... + 152814471.

It is an arithmetic number, because the mean of its divisors is an integer number (1719162360).

Almost surely, 2^12225154520 is an apocalyptic number.

12225154520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12225154520 is an abundant number, since it is smaller than the sum of its proper divisors (15281443240).

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

12225154520 is a wasteful number, since it uses less digits than its factorization.

12225154520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305628874 (or 305628870 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 12225154520 in words is "twelve billion, two hundred twenty-five million, one hundred fifty-four thousand, five hundred twenty".