12523235251 has 2 divisors, whose sum is σ = 12523235252. Its totient is φ = 12523235250.

The previous prime is 12523235243. The next prime is 12523235287. The reversal of 12523235251 is 15253232521.

It is a weak prime.

It is an emirp because it is prime and its reverse (15253232521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12523235251 - 2³ = 12523235243 is a prime.

It is not a weakly prime, because it can be changed into another prime (12523238251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6261617625 + 6261617626.

It is an arithmetic number, because the mean of its divisors is an integer number (6261617626).

Almost surely, 2^12523235251 is an apocalyptic number.

12523235251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12523235251 is an equidigital number, since it uses as much as digits as its factorization.

12523235251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 31.

Adding to 12523235251 its reverse (15253232521), we get a palindrome (27776467772).

The spelling of 12523235251 in words is "twelve billion, five hundred twenty-three million, two hundred thirty-five thousand, two hundred fifty-one".