80425791 has 20 divisors (see below), whose sum is σ = 122185800. Its totient is φ = 52705296.

The previous prime is 80425783. The next prime is 80425819. The reversal of 80425791 is 19752408.

80425791 is a `hidden beast` number, since 80 + 4 + 2 + 579 + 1 = 666.

It is not a de Polignac number, because 80425791 - 2³ = 80425783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80425591) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3636 + ... + 13193.

It is an arithmetic number, because the mean of its divisors is an integer number (6109290).

Almost surely, 2^80425791 is an apocalyptic number.

80425791 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

80425791 is a deficient number, since it is larger than the sum of its proper divisors (41760009).

80425791 is a wasteful number, since it uses less digits than its factorization.

80425791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16900 (or 16891 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 80425791 is about 8968.0427630559. The cubic root of 80425791 is about 431.6500348553.

The spelling of 80425791 in words is "eighty million, four hundred twenty-five thousand, seven hundred ninety-one".