82505672 has 16 divisors (see below), whose sum is σ = 157235100. Its totient is φ = 40576320.

The previous prime is 82505639. The next prime is 82505681. The reversal of 82505672 is 27650528.

It can be written as a sum of positive squares in 2 ways, for example, as 69789316 + 12716356 = 8354^2 + 3566^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84047 + ... + 85022.

Almost surely, 2^82505672 is an apocalyptic number.

It is an amenable number.

82505672 is a deficient number, since it is larger than the sum of its proper divisors (74729428).

82505672 is a wasteful number, since it uses less digits than its factorization.

82505672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169136 (or 169132 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 82505672 is about 9083.2632902498. The cubic root of 82505672 is about 435.3393608483.

The spelling of 82505672 in words is "eighty-two million, five hundred five thousand, six hundred seventy-two".