25670171 has 2 divisors, whose sum is σ = 25670172. Its totient is φ = 25670170.

The previous prime is 25670149. The next prime is 25670243. The reversal of 25670171 is 17107652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25670171 - 2⁶ = 25670107 is a prime.

It is a super-4 number, since 4×25670171⁴ (a number of 31 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25600171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12835085 + 12835086.

It is an arithmetic number, because the mean of its divisors is an integer number (12835086).

Almost surely, 2^25670171 is an apocalyptic number.

25670171 is a deficient number, since it is larger than the sum of its proper divisors (1).

25670171 is an equidigital number, since it uses as much as digits as its factorization.

25670171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 25670171 is about 5066.5738916945. The cubic root of 25670171 is about 294.9915577398.

The spelling of 25670171 in words is "twenty-five million, six hundred seventy thousand, one hundred seventy-one".