82439525 has 24 divisors (see below), whose sum is σ = 117206784. Its totient is φ = 56347200.

The previous prime is 82439503. The next prime is 82439563. The reversal of 82439525 is 52593428.

It is not a de Polignac number, because 82439525 - 2¹⁰ = 82438501 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74879 + ... + 75971.

It is an arithmetic number, because the mean of its divisors is an integer number (4883616).

Almost surely, 2^82439525 is an apocalyptic number.

It is an amenable number.

82439525 is a deficient number, since it is larger than the sum of its proper divisors (34767259).

82439525 is a wasteful number, since it uses less digits than its factorization.

82439525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541 (or 1536 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 82439525 is about 9079.6214128123. The cubic root of 82439525 is about 435.2229886804. Note that the first 3 decimals are identical.

The spelling of 82439525 in words is "eighty-two million, four hundred thirty-nine thousand, five hundred twenty-five".