82427725 has 6 divisors (see below), whose sum is σ = 102210410. Its totient is φ = 65942160.

The previous prime is 82427717. The next prime is 82427743. The reversal of 82427725 is 52772428.

It can be written as a sum of positive squares in 3 ways, for example, as 6702921 + 75724804 = 2589^2 + 8702^2 .

It is not a de Polignac number, because 82427725 - 2³ = 82427717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1648530 + ... + 1648579.

Almost surely, 2^82427725 is an apocalyptic number.

It is an amenable number.

82427725 is a deficient number, since it is larger than the sum of its proper divisors (19782685).

82427725 is a wasteful number, since it uses less digits than its factorization.

82427725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297119 (or 3297114 counting only the distinct ones).

The product of its digits is 62720, while the sum is 37.

The square root of 82427725 is about 9078.9715827290. The cubic root of 82427725 is about 435.2022224427.

The spelling of 82427725 in words is "eighty-two million, four hundred twenty-seven thousand, seven hundred twenty-five".