82501663325 has 6 divisors (see below), whose sum is σ = 102302062554. Its totient is φ = 66001330640.

The previous prime is 82501663301. The next prime is 82501663327. The reversal of 82501663325 is 52336610528.

It can be written as a sum of positive squares in 3 ways, for example, as 26808495289 + 55693168036 = 163733^2 + 235994^2 .

It is not a de Polignac number, because 82501663325 - 2¹⁰ = 82501662301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82501663327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1650033242 + ... + 1650033291.

It is an arithmetic number, because the mean of its divisors is an integer number (17050343759).

Almost surely, 2^82501663325 is an apocalyptic number.

It is an amenable number.

82501663325 is a deficient number, since it is larger than the sum of its proper divisors (19800399229).

82501663325 is a wasteful number, since it uses less digits than its factorization.

82501663325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300066543 (or 3300066538 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 82501663325 in words is "eighty-two billion, five hundred one million, six hundred sixty-three thousand, three hundred twenty-five".