80525911 has 4 divisors (see below), whose sum is σ = 80545024. Its totient is φ = 80506800.

The previous prime is 80525903. The next prime is 80525959. The reversal of 80525911 is 11952508.

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

It is a cyclic number.

It is not a de Polignac number, because 80525911 - 2³ = 80525903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80525981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150 + ... + 12691.

It is an arithmetic number, because the mean of its divisors is an integer number (20136256).

Almost surely, 2^80525911 is an apocalyptic number.

80525911 is a deficient number, since it is larger than the sum of its proper divisors (19113).

80525911 is a wasteful number, since it uses less digits than its factorization.

80525911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19112.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 80525911 is about 8973.6230698643. The cubic root of 80525911 is about 431.8290772585.

The spelling of 80525911 in words is "eighty million, five hundred twenty-five thousand, nine hundred eleven".