82195825 has 6 divisors (see below), whose sum is σ = 101922854. Its totient is φ = 65756640.

The previous prime is 82195823. The next prime is 82195829. The reversal of 82195825 is 52859128.

It can be written as a sum of positive squares in 3 ways, for example, as 26708224 + 55487601 = 5168^2 + 7449^2 .

It is not a de Polignac number, because 82195825 - 2¹ = 82195823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82195823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1643892 + ... + 1643941.

Almost surely, 2^82195825 is an apocalyptic number.

It is an amenable number.

82195825 is a deficient number, since it is larger than the sum of its proper divisors (19727029).

82195825 is a wasteful number, since it uses less digits than its factorization.

82195825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287843 (or 3287838 counting only the distinct ones).

The product of its digits is 57600, while the sum is 40.

The square root of 82195825 is about 9066.1913171960. The cubic root of 82195825 is about 434.7937102636.

The spelling of 82195825 in words is "eighty-two million, one hundred ninety-five thousand, eight hundred twenty-five".