25670066671 has 2 divisors, whose sum is σ = 25670066672. Its totient is φ = 25670066670.

The previous prime is 25670066663. The next prime is 25670066683. The reversal of 25670066671 is 17666007652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25670066671 - 2³ = 25670066663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25670066621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12835033335 + 12835033336.

It is an arithmetic number, because the mean of its divisors is an integer number (12835033336).

Almost surely, 2^25670066671 is an apocalyptic number.

25670066671 is a deficient number, since it is larger than the sum of its proper divisors (1).

25670066671 is an equidigital number, since it uses as much as digits as its factorization.

25670066671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 25670066671 in words is "twenty-five billion, six hundred seventy million, sixty-six thousand, six hundred seventy-one".