12321143025 has 12 divisors (see below), whose sum is σ = 20370956592. Its totient is φ = 6571276240.

The previous prime is 12321142993. The next prime is 12321143039. The reversal of 12321143025 is 52034112321.

It is not a de Polignac number, because 12321143025 - 2⁵ = 12321142993 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12321142986 and 12321143004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82140879 + ... + 82141028.

It is an arithmetic number, because the mean of its divisors is an integer number (1697579716).

Almost surely, 2^12321143025 is an apocalyptic number.

12321143025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12321143025 is a deficient number, since it is larger than the sum of its proper divisors (8049813567).

12321143025 is a wasteful number, since it uses less digits than its factorization.

12321143025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164281920 (or 164281915 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 12321143025 its reverse (52034112321), we get a palindrome (64355255346).

The spelling of 12321143025 in words is "twelve billion, three hundred twenty-one million, one hundred forty-three thousand, twenty-five".