12512451533 has 2 divisors, whose sum is σ = 12512451534. Its totient is φ = 12512451532.

The previous prime is 12512451517. The next prime is 12512451541. The reversal of 12512451533 is 33515421521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8165291044 + 4347160489 = 90362^2 + 65933^2 .

It is a cyclic number.

It is not a de Polignac number, because 12512451533 - 2⁴ = 12512451517 is a prime.

It is a super-2 number, since 2×12512451533² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12512451533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12512451583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6256225766 + 6256225767.

It is an arithmetic number, because the mean of its divisors is an integer number (6256225767).

Almost surely, 2^12512451533 is an apocalyptic number.

It is an amenable number.

12512451533 is a deficient number, since it is larger than the sum of its proper divisors (1).

12512451533 is an equidigital number, since it uses as much as digits as its factorization.

12512451533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 32.

The spelling of 12512451533 in words is "twelve billion, five hundred twelve million, four hundred fifty-one thousand, five hundred thirty-three".