80858285 has 4 divisors (see below), whose sum is σ = 97029948. Its totient is φ = 64686624.

The previous prime is 80858263. The next prime is 80858291. The reversal of 80858285 is 58285808.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22458121 + 58400164 = 4739^2 + 7642^2 .

It is a cyclic number.

It is not a de Polignac number, because 80858285 - 2⁶ = 80858221 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 8085824 + ... + 8085833.

It is an arithmetic number, because the mean of its divisors is an integer number (24257487).

Almost surely, 2^80858285 is an apocalyptic number.

It is an amenable number.

80858285 is a deficient number, since it is larger than the sum of its proper divisors (16171663).

80858285 is a wasteful number, since it uses less digits than its factorization.

80858285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16171662.

The product of its (nonzero) digits is 204800, while the sum is 44.

The square root of 80858285 is about 8992.1234978174. The cubic root of 80858285 is about 432.4223924367.

The spelling of 80858285 in words is "eighty million, eight hundred fifty-eight thousand, two hundred eighty-five".