82505272 has 16 divisors (see below), whose sum is σ = 154956600. Its totient is φ = 41183520.

The previous prime is 82505251. The next prime is 82505279. The reversal of 82505272 is 27250528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82505279) 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, 3379 + ... + 13282.

Almost surely, 2^82505272 is an apocalyptic number.

It is an amenable number.

82505272 is a deficient number, since it is larger than the sum of its proper divisors (72451328).

82505272 is a wasteful number, since it uses less digits than its factorization.

82505272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17286 (or 17282 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 82505272 is about 9083.2412717047. The cubic root of 82505272 is about 435.3386573168.

The spelling of 82505272 in words is "eighty-two million, five hundred five thousand, two hundred seventy-two".