25284947 has 2 divisors, whose sum is σ = 25284948. Its totient is φ = 25284946.

The previous prime is 25284923. The next prime is 25284971. The reversal of 25284947 is 74948252.

It is a balanced prime because it is at equal distance from previous prime (25284923) and next prime (25284971).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25284947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25284907) 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, 12642473 + 12642474.

It is an arithmetic number, because the mean of its divisors is an integer number (12642474).

Almost surely, 2^25284947 is an apocalyptic number.

25284947 is a deficient number, since it is larger than the sum of its proper divisors (1).

25284947 is an equidigital number, since it uses as much as digits as its factorization.

25284947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 41.

The square root of 25284947 is about 5028.4139646612. The cubic root of 25284947 is about 293.5084997447.

The spelling of 25284947 in words is "twenty-five million, two hundred eighty-four thousand, nine hundred forty-seven".