82129325 has 6 divisors (see below), whose sum is σ = 101840394. Its totient is φ = 65703440.

The previous prime is 82129291. The next prime is 82129331. The reversal of 82129325 is 52392128.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 299209 + 81830116 = 547^2 + 9046^2 .

It is not a de Polignac number, because 82129325 - 2²⁰ = 81080749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82129291 and 82129300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1642562 + ... + 1642611.

It is an arithmetic number, because the mean of its divisors is an integer number (16973399).

Almost surely, 2^82129325 is an apocalyptic number.

It is an amenable number.

82129325 is a deficient number, since it is larger than the sum of its proper divisors (19711069).

82129325 is a wasteful number, since it uses less digits than its factorization.

82129325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285183 (or 3285178 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 82129325 is about 9062.5231034188. The cubic root of 82129325 is about 434.6764229491.

The spelling of 82129325 in words is "eighty-two million, one hundred twenty-nine thousand, three hundred twenty-five".