825109940971 has 2 divisors, whose sum is σ = 825109940972. Its totient is φ = 825109940970.

The previous prime is 825109940953. The next prime is 825109941023. The reversal of 825109940971 is 179049901528.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 825109940971 - 2⁵ = 825109940939 is a prime.

It is not a weakly prime, because it can be changed into another prime (825109943971) 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, 412554970485 + 412554970486.

It is an arithmetic number, because the mean of its divisors is an integer number (412554970486).

Almost surely, 2^825109940971 is an apocalyptic number.

825109940971 is a deficient number, since it is larger than the sum of its proper divisors (1).

825109940971 is an equidigital number, since it uses as much as digits as its factorization.

825109940971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The spelling of 825109940971 in words is "eight hundred twenty-five billion, one hundred nine million, nine hundred forty thousand, nine hundred seventy-one".