25166131 has 2 divisors, whose sum is σ = 25166132. Its totient is φ = 25166130.

The previous prime is 25166129. The next prime is 25166143. The reversal of 25166131 is 13166152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25166131 - 2¹ = 25166129 is a prime.

It is a super-2 number, since 2×25166131² = 1266668299018322, which contains 22 as substring.

Together with 25166129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 25166096 and 25166105.

It is not a weakly prime, because it can be changed into another prime (25166191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12583065 + 12583066.

It is an arithmetic number, because the mean of its divisors is an integer number (12583066).

Almost surely, 2^25166131 is an apocalyptic number.

25166131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25166131 is an equidigital number, since it uses as much as digits as its factorization.

25166131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 25166131 is about 5016.5855918144. The cubic root of 25166131 is about 293.0480377232.

The spelling of 25166131 in words is "twenty-five million, one hundred sixty-six thousand, one hundred thirty-one".