82825908481 has 4 divisors (see below), whose sum is σ = 82826687700. Its totient is φ = 82825129264.

The previous prime is 82825908467. The next prime is 82825908497. The reversal of 82825908481 is 18480952828.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 75259692225 + 7566216256 = 274335^2 + 86984^2 .

It is a cyclic number.

It is not a de Polignac number, because 82825908481 - 2⁷ = 82825908353 is a prime.

It is a super-2 number, since 2×82825908481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82825908181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199126 + ... + 453103.

It is an arithmetic number, because the mean of its divisors is an integer number (20706671925).

Almost surely, 2^82825908481 is an apocalyptic number.

It is an amenable number.

82825908481 is a deficient number, since it is larger than the sum of its proper divisors (779219).

82825908481 is a wasteful number, since it uses less digits than its factorization.

82825908481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779218.

The product of its (nonzero) digits is 2949120, while the sum is 55.

The spelling of 82825908481 in words is "eighty-two billion, eight hundred twenty-five million, nine hundred eight thousand, four hundred eighty-one".