82500889 has 9 divisors (see below), whose sum is σ = 85539999. Its totient is φ = 79567080.

The previous prime is 82500883. The next prime is 82500893. The reversal of 82500889 is 98800528.

It is a happy number.

The square root of 82500889 is 9083.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 78057225 + 4443664 = 8835^2 + 2108^2 .

It is not a de Polignac number, because 82500889 - 2⁹ = 82500377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82500883) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 281427 + ... + 281719.

Almost surely, 2^82500889 is an apocalyptic number.

82500889 is the 9083-rd square number.

82500889 is the 4542-nd centered octagonal number.

It is an amenable number.

82500889 is a deficient number, since it is larger than the sum of its proper divisors (3039110).

82500889 is an frugal number, since it uses more digits than its factorization.

82500889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The cubic root of 82500889 is about 435.3309482210.

The spelling of 82500889 in words is "eighty-two million, five hundred thousand, eight hundred eighty-nine".