82525815 has 24 divisors (see below), whose sum is σ = 146374800. Its totient is φ = 42989184.

The previous prime is 82525801. The next prime is 82525841. The reversal of 82525815 is 51852528.

It is not a de Polignac number, because 82525815 - 2¹⁴ = 82509431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82525815.

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, 19390 + ... + 23259.

It is an arithmetic number, because the mean of its divisors is an integer number (6098950).

Almost surely, 2^82525815 is an apocalyptic number.

82525815 is a deficient number, since it is larger than the sum of its proper divisors (63848985).

82525815 is a wasteful number, since it uses less digits than its factorization.

82525815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42703 (or 42700 counting only the distinct ones).

The product of its digits is 32000, while the sum is 36.

The square root of 82525815 is about 9084.3720201234. The cubic root of 82525815 is about 435.3747859975.

The spelling of 82525815 in words is "eighty-two million, five hundred twenty-five thousand, eight hundred fifteen".