825608288261 has 2 divisors, whose sum is σ = 825608288262. Its totient is φ = 825608288260.

The previous prime is 825608288189. The next prime is 825608288291. The reversal of 825608288261 is 162882806528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 557066684161 + 268541604100 = 746369^2 + 518210^2 .

It is a cyclic number.

It is not a de Polignac number, because 825608288261 - 2¹⁴ = 825608271877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 825608288197 and 825608288206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825608288291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412804144130 + 412804144131.

It is an arithmetic number, because the mean of its divisors is an integer number (412804144131).

Almost surely, 2^825608288261 is an apocalyptic number.

It is an amenable number.

825608288261 is a deficient number, since it is larger than the sum of its proper divisors (1).

825608288261 is an equidigital number, since it uses as much as digits as its factorization.

825608288261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5898240, while the sum is 56.

The spelling of 825608288261 in words is "eight hundred twenty-five billion, six hundred eight million, two hundred eighty-eight thousand, two hundred sixty-one".