82739825 has 12 divisors (see below), whose sum is σ = 117254400. Its totient is φ = 56735760.

The previous prime is 82739821. The next prime is 82739831. The reversal of 82739825 is 52893728.

It is not a de Polignac number, because 82739825 - 2² = 82739821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82739821) 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, 236225 + ... + 236574.

It is an arithmetic number, because the mean of its divisors is an integer number (9771200).

Almost surely, 2^82739825 is an apocalyptic number.

It is an amenable number.

82739825 is a deficient number, since it is larger than the sum of its proper divisors (34514575).

82739825 is a wasteful number, since it uses less digits than its factorization.

82739825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472816 (or 472811 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 82739825 is about 9096.1434135572. The cubic root of 82739825 is about 435.7508062451.

The spelling of 82739825 in words is "eighty-two million, seven hundred thirty-nine thousand, eight hundred twenty-five".