80445265 has 8 divisors (see below), whose sum is σ = 97389288. Its totient is φ = 63786240.

The previous prime is 80445251. The next prime is 80445311. The reversal of 80445265 is 56254408.

It can be written as a sum of positive squares in 4 ways, for example, as 2304 + 80442961 = 48^2 + 8969^2 .

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

It is not a de Polignac number, because 80445265 - 2⁷ = 80445137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80445265.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70626 + ... + 71755.

It is an arithmetic number, because the mean of its divisors is an integer number (12173661).

Almost surely, 2^80445265 is an apocalyptic number.

It is an amenable number.

80445265 is a deficient number, since it is larger than the sum of its proper divisors (16944023).

80445265 is a wasteful number, since it uses less digits than its factorization.

80445265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142499.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 80445265 is about 8969.1284414931. The cubic root of 80445265 is about 431.6848714183.

The spelling of 80445265 in words is "eighty million, four hundred forty-five thousand, two hundred sixty-five".