80825865 has 8 divisors (see below), whose sum is σ = 129321408. Its totient is φ = 43107120.

The previous prime is 80825831. The next prime is 80825869. The reversal of 80825865 is 56852808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80825865 - 2⁸ = 80825609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80825869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2694181 + ... + 2694210.

It is an arithmetic number, because the mean of its divisors is an integer number (16165176).

Almost surely, 2^80825865 is an apocalyptic number.

It is an amenable number.

80825865 is a deficient number, since it is larger than the sum of its proper divisors (48495543).

80825865 is a wasteful number, since it uses less digits than its factorization.

80825865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5388399.

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 80825865 is about 8990.3206283202. The cubic root of 80825865 is about 432.3645916888.

The spelling of 80825865 in words is "eighty million, eight hundred twenty-five thousand, eight hundred sixty-five".