82817025 has 24 divisors (see below), whose sum is σ = 138976224. Its totient is φ = 43507200.

The previous prime is 82817023. The next prime is 82817039. The reversal of 82817025 is 52071828.

It is not a de Polignac number, because 82817025 - 2¹ = 82817023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82817023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3216 + ... + 13265.

It is an arithmetic number, because the mean of its divisors is an integer number (5790676).

Almost surely, 2^82817025 is an apocalyptic number.

It is an amenable number.

82817025 is a deficient number, since it is larger than the sum of its proper divisors (56159199).

82817025 is a wasteful number, since it uses less digits than its factorization.

82817025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16561 (or 16556 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 82817025 is about 9100.3859808252. The cubic root of 82817025 is about 435.8862891887.

The spelling of 82817025 in words is "eighty-two million, eight hundred seventeen thousand, twenty-five".