825471805331 has 2 divisors, whose sum is σ = 825471805332. Its totient is φ = 825471805330.

The previous prime is 825471805241. The next prime is 825471805363. The reversal of 825471805331 is 133508174528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 825471805331 - 2¹⁰ = 825471804307 is a prime.

It is a super-2 number, since 2×825471805331² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (825471805381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412735902665 + 412735902666.

It is an arithmetic number, because the mean of its divisors is an integer number (412735902666).

Almost surely, 2^825471805331 is an apocalyptic number.

825471805331 is a deficient number, since it is larger than the sum of its proper divisors (1).

825471805331 is an equidigital number, since it uses as much as digits as its factorization.

825471805331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 47.

Adding to 825471805331 its reverse (133508174528), we get a palindrome (958979979859).

The spelling of 825471805331 in words is "eight hundred twenty-five billion, four hundred seventy-one million, eight hundred five thousand, three hundred thirty-one".