80565425589 has 32 divisors (see below), whose sum is σ = 119258248320. Its totient is φ = 47971123200.

The previous prime is 80565425579. The next prime is 80565425599. The reversal of 80565425589 is 98552456508.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80565425579) and next prime (80565425599).

It is not a de Polignac number, because 80565425589 - 2⁸ = 80565425333 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80565425519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373749 + ... + 548469.

It is an arithmetic number, because the mean of its divisors is an integer number (3726820260).

Almost surely, 2^80565425589 is an apocalyptic number.

80565425589 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

80565425589 is a deficient number, since it is larger than the sum of its proper divisors (38692822731).

80565425589 is a wasteful number, since it uses less digits than its factorization.

80565425589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174981.

The product of its (nonzero) digits is 17280000, while the sum is 57.

The spelling of 80565425589 in words is "eighty billion, five hundred sixty-five million, four hundred twenty-five thousand, five hundred eighty-nine".