25547867 has 2 divisors, whose sum is σ = 25547868. Its totient is φ = 25547866.

The previous prime is 25547861. The next prime is 25547881. The reversal of 25547867 is 76874552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25547867 - 2⁶ = 25547803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25547861) 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, 12773933 + 12773934.

It is an arithmetic number, because the mean of its divisors is an integer number (12773934).

Almost surely, 2^25547867 is an apocalyptic number.

25547867 is a deficient number, since it is larger than the sum of its proper divisors (1).

25547867 is an equidigital number, since it uses as much as digits as its factorization.

25547867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 44.

The square root of 25547867 is about 5054.4897863187. The cubic root of 25547867 is about 294.5223218342.

The spelling of 25547867 in words is "twenty-five million, five hundred forty-seven thousand, eight hundred sixty-seven".