25471811 has 2 divisors, whose sum is σ = 25471812. Its totient is φ = 25471810.

The previous prime is 25471777. The next prime is 25471819. The reversal of 25471811 is 11817452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25471811 - 2¹⁴ = 25455427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25471819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12735905 + 12735906.

It is an arithmetic number, because the mean of its divisors is an integer number (12735906).

Almost surely, 2^25471811 is an apocalyptic number.

25471811 is a deficient number, since it is larger than the sum of its proper divisors (1).

25471811 is an equidigital number, since it uses as much as digits as its factorization.

25471811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 29.

The square root of 25471811 is about 5046.9605704820. The cubic root of 25471811 is about 294.2297670128.

The spelling of 25471811 in words is "twenty-five million, four hundred seventy-one thousand, eight hundred eleven".