82425857 has 4 divisors (see below), whose sum is σ = 86764080. Its totient is φ = 78087636.

The previous prime is 82425851. The next prime is 82425887. The reversal of 82425857 is 75852428.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82425857 - 2¹⁰ = 82424833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82425851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2169083 + ... + 2169120.

It is an arithmetic number, because the mean of its divisors is an integer number (21691020).

Almost surely, 2^82425857 is an apocalyptic number.

It is an amenable number.

82425857 is a deficient number, since it is larger than the sum of its proper divisors (4338223).

82425857 is a wasteful number, since it uses less digits than its factorization.

82425857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338222.

The product of its digits is 179200, while the sum is 41.

The square root of 82425857 is about 9078.8687070582. The cubic root of 82425857 is about 435.1989348600.

The spelling of 82425857 in words is "eighty-two million, four hundred twenty-five thousand, eight hundred fifty-seven".