8025481691 has 2 divisors, whose sum is σ = 8025481692. Its totient is φ = 8025481690.

The previous prime is 8025481631. The next prime is 8025481729. The reversal of 8025481691 is 1961845208.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8025481691 is a prime.

It is not a weakly prime, because it can be changed into another prime (8025481631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4012740845 + 4012740846.

It is an arithmetic number, because the mean of its divisors is an integer number (4012740846).

Almost surely, 2^8025481691 is an apocalyptic number.

8025481691 is a deficient number, since it is larger than the sum of its proper divisors (1).

8025481691 is an equidigital number, since it uses as much as digits as its factorization.

8025481691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 8025481691 is about 89585.0528324899. The cubic root of 8025481691 is about 2002.1212236597.

The spelling of 8025481691 in words is "eight billion, twenty-five million, four hundred eighty-one thousand, six hundred ninety-one".