82143625 has 16 divisors (see below), whose sum is σ = 102954384. Its totient is φ = 65433600.

The previous prime is 82143619. The next prime is 82143641. The reversal of 82143625 is 52634128.

It can be written as a sum of positive squares in 8 ways, for example, as 7683984 + 74459641 = 2772^2 + 8629^2 .

It is not a de Polignac number, because 82143625 - 2³ = 82143617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30847 + ... + 33403.

It is an arithmetic number, because the mean of its divisors is an integer number (6434649).

Almost surely, 2^82143625 is an apocalyptic number.

It is an amenable number.

82143625 is a deficient number, since it is larger than the sum of its proper divisors (20810759).

82143625 is a wasteful number, since it uses less digits than its factorization.

82143625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829 (or 2819 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 82143625 is about 9063.3120325850. The cubic root of 82143625 is about 434.7016494729.

The spelling of 82143625 in words is "eighty-two million, one hundred forty-three thousand, six hundred twenty-five".