80221985 has 4 divisors (see below), whose sum is σ = 96266388. Its totient is φ = 64177584.

The previous prime is 80221979. The next prime is 80221991. The reversal of 80221985 is 58912208.

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

It is an interprime number because it is at equal distance from previous prime (80221979) and next prime (80221991).

It can be written as a sum of positive squares in 2 ways, for example, as 17606416 + 62615569 = 4196^2 + 7913^2 .

It is a cyclic number.

It is not a de Polignac number, because 80221985 - 2⁴ = 80221969 is a prime.

It is a Duffinian 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, 8022194 + ... + 8022203.

It is an arithmetic number, because the mean of its divisors is an integer number (24066597).

Almost surely, 2^80221985 is an apocalyptic number.

It is an amenable number.

80221985 is a deficient number, since it is larger than the sum of its proper divisors (16044403).

80221985 is a wasteful number, since it uses less digits than its factorization.

80221985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16044402.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 80221985 is about 8956.6726522744. The cubic root of 80221985 is about 431.2851134330.

The spelling of 80221985 in words is "eighty million, two hundred twenty-one thousand, nine hundred eighty-five".