13531125533 has 2 divisors, whose sum is σ = 13531125534. Its totient is φ = 13531125532.

The previous prime is 13531125523. The next prime is 13531125563. The reversal of 13531125533 is 33552113531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13185239929 + 345885604 = 114827^2 + 18598^2 .

It is a cyclic number.

It is not a de Polignac number, because 13531125533 - 2⁸ = 13531125277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13531125533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531125523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765562766 + 6765562767.

It is an arithmetic number, because the mean of its divisors is an integer number (6765562767).

Almost surely, 2^13531125533 is an apocalyptic number.

It is an amenable number.

13531125533 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531125533 is an equidigital number, since it uses as much as digits as its factorization.

13531125533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20250, while the sum is 32.

The spelling of 13531125533 in words is "thirteen billion, five hundred thirty-one million, one hundred twenty-five thousand, five hundred thirty-three".