25716167 has 2 divisors, whose sum is σ = 25716168. Its totient is φ = 25716166.

The previous prime is 25716109. The next prime is 25716169. The reversal of 25716167 is 76161752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25716167 - 2¹⁶ = 25650631 is a prime.

It is a super-2 number, since 2×25716167² = 1322642490343778, which contains 22 as substring.

Together with 25716169, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25716169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12858083 + 12858084.

It is an arithmetic number, because the mean of its divisors is an integer number (12858084).

Almost surely, 2^25716167 is an apocalyptic number.

25716167 is a deficient number, since it is larger than the sum of its proper divisors (1).

25716167 is an equidigital number, since it uses as much as digits as its factorization.

25716167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 35.

The square root of 25716167 is about 5071.1110222514. Note that the first 3 decimals coincide. The cubic root of 25716167 is about 295.1676419550.

The spelling of 25716167 in words is "twenty-five million, seven hundred sixteen thousand, one hundred sixty-seven".