80436265 has 32 divisors (see below), whose sum is σ = 125798400. Its totient is φ = 47913984.

The previous prime is 80436259. The next prime is 80436269. The reversal of 80436265 is 56263408.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80436265 - 2²⁵ = 46881833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80436265.

It is not an unprimeable number, because it can be changed into a prime (80436269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2536 + ... + 12934.

It is an arithmetic number, because the mean of its divisors is an integer number (3931200).

Almost surely, 2^80436265 is an apocalyptic number.

80436265 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80436265 is a deficient number, since it is larger than the sum of its proper divisors (45362135).

80436265 is a wasteful number, since it uses less digits than its factorization.

80436265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10441.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 80436265 is about 8968.6267064696. The cubic root of 80436265 is about 431.6687722369.

The spelling of 80436265 in words is "eighty million, four hundred thirty-six thousand, two hundred sixty-five".