80125817 has 2 divisors, whose sum is σ = 80125818. Its totient is φ = 80125816.

The previous prime is 80125807. The next prime is 80125861. The reversal of 80125817 is 71852108.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66406201 + 13719616 = 8149^2 + 3704^2 .

It is a cyclic number.

It is not a de Polignac number, because 80125817 - 2⁸ = 80125561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80125807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40062908 + 40062909.

It is an arithmetic number, because the mean of its divisors is an integer number (40062909).

Almost surely, 2^80125817 is an apocalyptic number.

It is an amenable number.

80125817 is a deficient number, since it is larger than the sum of its proper divisors (1).

80125817 is an equidigital number, since it uses as much as digits as its factorization.

80125817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 80125817 is about 8951.3025309169. The cubic root of 80125817 is about 431.1127067824.

The spelling of 80125817 in words is "eighty million, one hundred twenty-five thousand, eight hundred seventeen".