12144320425 has 12 divisors (see below), whose sum is σ = 15249579520. Its totient is φ = 9592474320.

The previous prime is 12144320423. The next prime is 12144320437. The reversal of 12144320425 is 52402344121.

It is not a de Polignac number, because 12144320425 - 2¹ = 12144320423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12144320393 and 12144320402.

It is not an unprimeable number, because it can be changed into a prime (12144320423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3072537 + ... + 3076486.

Almost surely, 2^12144320425 is an apocalyptic number.

It is an amenable number.

12144320425 is a deficient number, since it is larger than the sum of its proper divisors (3105259095).

12144320425 is an equidigital number, since it uses as much as digits as its factorization.

12144320425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6149112 (or 6149107 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 12144320425 its reverse (52402344121), we get a palindrome (64546664546).

The spelling of 12144320425 in words is "twelve billion, one hundred forty-four million, three hundred twenty thousand, four hundred twenty-five".