82420325 has 12 divisors (see below), whose sum is σ = 110063268. Its totient is φ = 60864000.

The previous prime is 82420321. The next prime is 82420357. The reversal of 82420325 is 52302428.

It can be written as a sum of positive squares in 6 ways, for example, as 31967716 + 50452609 = 5654^2 + 7103^2 .

It is not a de Polignac number, because 82420325 - 2² = 82420321 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82420294 and 82420303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82420321) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 126476 + ... + 127125.

It is an arithmetic number, because the mean of its divisors is an integer number (9171939).

Almost surely, 2^82420325 is an apocalyptic number.

It is an amenable number.

82420325 is a deficient number, since it is larger than the sum of its proper divisors (27642943).

82420325 is a wasteful number, since it uses less digits than its factorization.

82420325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253624 (or 253619 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 82420325 is about 9078.5640384369. The cubic root of 82420325 is about 435.1891985367.

The spelling of 82420325 in words is "eighty-two million, four hundred twenty thousand, three hundred twenty-five".