82502557505 has 8 divisors (see below), whose sum is σ = 99983298024. Its totient is φ = 65348560000.

The previous prime is 82502557469. The next prime is 82502557507. The reversal of 82502557505 is 50575520528.

It can be written as a sum of positive squares in 4 ways, for example, as 19565295376 + 62937262129 = 139876^2 + 250873^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82502557505 - 2⁶ = 82502557441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82502557507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81685196 + ... + 81686205.

It is an arithmetic number, because the mean of its divisors is an integer number (12497912253).

Almost surely, 2^82502557505 is an apocalyptic number.

It is an amenable number.

82502557505 is a deficient number, since it is larger than the sum of its proper divisors (17480740519).

82502557505 is a wasteful number, since it uses less digits than its factorization.

82502557505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163371507.

The product of its (nonzero) digits is 700000, while the sum is 44.

The spelling of 82502557505 in words is "eighty-two billion, five hundred two million, five hundred fifty-seven thousand, five hundred five".