12745253537 has 2 divisors, whose sum is σ = 12745253538. Its totient is φ = 12745253536.

The previous prime is 12745253503. The next prime is 12745253551. The reversal of 12745253537 is 73535254721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6950390161 + 5794863376 = 83369^2 + 76124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12745253537 is a prime.

It is a super-2 number, since 2×12745253537² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12745253567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6372626768 + 6372626769.

It is an arithmetic number, because the mean of its divisors is an integer number (6372626769).

Almost surely, 2^12745253537 is an apocalyptic number.

It is an amenable number.

12745253537 is a deficient number, since it is larger than the sum of its proper divisors (1).

12745253537 is an equidigital number, since it uses as much as digits as its factorization.

12745253537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882000, while the sum is 44.

The spelling of 12745253537 in words is "twelve billion, seven hundred forty-five million, two hundred fifty-three thousand, five hundred thirty-seven".