805025935897 has 2 divisors, whose sum is σ = 805025935898. Its totient is φ = 805025935896.

The previous prime is 805025935891. The next prime is 805025935963. The reversal of 805025935897 is 798539520508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420106200336 + 384919735561 = 648156^2 + 620419^2 .

It is a cyclic number.

It is not a de Polignac number, because 805025935897 - 2²³ = 805017547289 is a prime.

It is not a weakly prime, because it can be changed into another prime (805025935891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402512967948 + 402512967949.

It is an arithmetic number, because the mean of its divisors is an integer number (402512967949).

Almost surely, 2^805025935897 is an apocalyptic number.

It is an amenable number.

805025935897 is a deficient number, since it is larger than the sum of its proper divisors (1).

805025935897 is an equidigital number, since it uses as much as digits as its factorization.

805025935897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216000, while the sum is 61.

The spelling of 805025935897 in words is "eight hundred five billion, twenty-five million, nine hundred thirty-five thousand, eight hundred ninety-seven".