12525570439 has 2 divisors, whose sum is σ = 12525570440. Its totient is φ = 12525570438.

The previous prime is 12525570383. The next prime is 12525570451. The reversal of 12525570439 is 93407552521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12525570439 - 2⁷ = 12525570311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12525570395 and 12525570404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12525573439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6262785219 + 6262785220.

It is an arithmetic number, because the mean of its divisors is an integer number (6262785220).

Almost surely, 2^12525570439 is an apocalyptic number.

12525570439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12525570439 is an equidigital number, since it uses as much as digits as its factorization.

12525570439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 12525570439 in words is "twelve billion, five hundred twenty-five million, five hundred seventy thousand, four hundred thirty-nine".