13225355543537 has 2 divisors, whose sum is σ = 13225355543538. Its totient is φ = 13225355543536.

The previous prime is 13225355543503. The next prime is 13225355543557. The reversal of 13225355543537 is 73534555352231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9007585597696 + 4217769945841 = 3001264^2 + 2053721^2 .

It is a cyclic number.

It is not a de Polignac number, because 13225355543537 - 2⁶ = 13225355543473 is a prime.

It is not a weakly prime, because it can be changed into another prime (13225355543557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6612677771768 + 6612677771769.

It is an arithmetic number, because the mean of its divisors is an integer number (6612677771769).

Almost surely, 2^{13225355543537} is an apocalyptic number.

It is an amenable number.

13225355543537 is a deficient number, since it is larger than the sum of its proper divisors (1).

13225355543537 is an equidigital number, since it uses as much as digits as its factorization.

13225355543537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28350000, while the sum is 53.

The spelling of 13225355543537 in words is "thirteen trillion, two hundred twenty-five billion, three hundred fifty-five million, five hundred forty-three thousand, five hundred thirty-seven".