12542262529 has 2 divisors, whose sum is σ = 12542262530. Its totient is φ = 12542262528.

The previous prime is 12542262437. The next prime is 12542262541. The reversal of 12542262529 is 92526224521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9515612304 + 3026650225 = 97548^2 + 55015^2 .

It is a cyclic number.

It is not a de Polignac number, because 12542262529 - 2²¹ = 12540165377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12542262491 and 12542262500.

It is not a weakly prime, because it can be changed into another prime (12542262589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271131264 + 6271131265.

It is an arithmetic number, because the mean of its divisors is an integer number (6271131265).

Almost surely, 2^12542262529 is an apocalyptic number.

It is an amenable number.

12542262529 is a deficient number, since it is larger than the sum of its proper divisors (1).

12542262529 is an equidigital number, since it uses as much as digits as its factorization.

12542262529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 40.

The spelling of 12542262529 in words is "twelve billion, five hundred forty-two million, two hundred sixty-two thousand, five hundred twenty-nine".