80125691 has 2 divisors, whose sum is σ = 80125692. Its totient is φ = 80125690.

The previous prime is 80125667. The next prime is 80125711. The reversal of 80125691 is 19652108.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80125691 - 2¹⁴ = 80109307 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80125601) 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 as a sum of consecutive naturals, namely, 40062845 + 40062846.

It is an arithmetic number, because the mean of its divisors is an integer number (40062846).

Almost surely, 2^80125691 is an apocalyptic number.

80125691 is a deficient number, since it is larger than the sum of its proper divisors (1).

80125691 is an equidigital number, since it uses as much as digits as its factorization.

80125691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 80125691 is about 8951.2954928323. The cubic root of 80125691 is about 431.1124808035.

Adding to 80125691 its reverse (19652108), we get a palindrome (99777799).

The spelling of 80125691 in words is "eighty million, one hundred twenty-five thousand, six hundred ninety-one".