12143501225 has 6 divisors (see below), whose sum is σ = 15057941550. Its totient is φ = 9714800960.

The previous prime is 12143501221. The next prime is 12143501239. The reversal of 12143501225 is 52210534121.

It can be written as a sum of positive squares in 3 ways, for example, as 2972757529 + 9170743696 = 54523^2 + 95764^2 .

It is not a de Polignac number, because 12143501225 - 2² = 12143501221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12143501194 and 12143501203.

It is not an unprimeable number, because it can be changed into a prime (12143501221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 242870000 + ... + 242870049.

It is an arithmetic number, because the mean of its divisors is an integer number (2509656925).

Almost surely, 2^12143501225 is an apocalyptic number.

It is an amenable number.

12143501225 is a deficient number, since it is larger than the sum of its proper divisors (2914440325).

12143501225 is an equidigital number, since it uses as much as digits as its factorization.

12143501225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485740059 (or 485740054 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 12143501225 in words is "twelve billion, one hundred forty-three million, five hundred one thousand, two hundred twenty-five".