80565259 has 2 divisors, whose sum is σ = 80565260. Its totient is φ = 80565258.

The previous prime is 80565253. The next prime is 80565269. The reversal of 80565259 is 95256508.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80565259 is a prime.

It is not a weakly prime, because it can be changed into another prime (80565253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40282629 + 40282630.

It is an arithmetic number, because the mean of its divisors is an integer number (40282630).

Almost surely, 2^80565259 is an apocalyptic number.

80565259 is a deficient number, since it is larger than the sum of its proper divisors (1).

80565259 is an equidigital number, since it uses as much as digits as its factorization.

80565259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 80565259 is about 8975.8152275991. The cubic root of 80565259 is about 431.8994018017.

The spelling of 80565259 in words is "eighty million, five hundred sixty-five thousand, two hundred fifty-nine".