80125861 has 2 divisors, whose sum is σ = 80125862. Its totient is φ = 80125860.

The previous prime is 80125817. The next prime is 80125867. The reversal of 80125861 is 16852108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47692836 + 32433025 = 6906^2 + 5695^2 .

It is a cyclic number.

It is not a de Polignac number, because 80125861 - 2⁷ = 80125733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80125867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40062930 + 40062931.

It is an arithmetic number, because the mean of its divisors is an integer number (40062931).

Almost surely, 2^80125861 is an apocalyptic number.

It is an amenable number.

80125861 is a deficient number, since it is larger than the sum of its proper divisors (1).

80125861 is an equidigital number, since it uses as much as digits as its factorization.

80125861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 80125861 is about 8951.3049886595. The cubic root of 80125861 is about 431.1127856956.

Adding to 80125861 its reverse (16852108), we get a palindrome (96977969).

It can be divided in two parts, 801 and 25861, that added together give a palindrome (26662).

The spelling of 80125861 in words is "eighty million, one hundred twenty-five thousand, eight hundred sixty-one".