12131308225 has 12 divisors (see below), whose sum is σ = 15098339200. Its totient is φ = 9669229200.

The previous prime is 12131308223. The next prime is 12131308243. The reversal of 12131308225 is 52280313121.

It is not a de Polignac number, because 12131308225 - 2¹ = 12131308223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12131308193 and 12131308202.

It is not an unprimeable number, because it can be changed into a prime (12131308223) 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, 888525 + ... + 902074.

Almost surely, 2^12131308225 is an apocalyptic number.

It is an amenable number.

12131308225 is a deficient number, since it is larger than the sum of its proper divisors (2967030975).

12131308225 is a wasteful number, since it uses less digits than its factorization.

12131308225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790880 (or 1790875 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

It can be divided in two parts, 12131 and 308225, that added together give a square (320356 = 566²).

The spelling of 12131308225 in words is "twelve billion, one hundred thirty-one million, three hundred eight thousand, two hundred twenty-five".