825399143533 has 2 divisors, whose sum is σ = 825399143534. Its totient is φ = 825399143532.

The previous prime is 825399143531. The next prime is 825399143567. The reversal of 825399143533 is 335341993528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528219343369 + 297179800164 = 726787^2 + 545142^2 .

It is a cyclic number.

It is not a de Polignac number, because 825399143533 - 2¹ = 825399143531 is a prime.

It is a super-2 number, since 2×825399143533² (a number of 25 digits) contains 22 as substring.

Together with 825399143531, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825399143531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412699571766 + 412699571767.

It is an arithmetic number, because the mean of its divisors is an integer number (412699571767).

Almost surely, 2^825399143533 is an apocalyptic number.

It is an amenable number.

825399143533 is a deficient number, since it is larger than the sum of its proper divisors (1).

825399143533 is an equidigital number, since it uses as much as digits as its factorization.

825399143533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10497600, while the sum is 55.

The spelling of 825399143533 in words is "eight hundred twenty-five billion, three hundred ninety-nine million, one hundred forty-three thousand, five hundred thirty-three".