25134847 has 2 divisors, whose sum is σ = 25134848. Its totient is φ = 25134846.

The previous prime is 25134841. The next prime is 25134859. The reversal of 25134847 is 74843152.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25134847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25134841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12567423 + 12567424.

It is an arithmetic number, because the mean of its divisors is an integer number (12567424).

Almost surely, 2^25134847 is an apocalyptic number.

25134847 is a deficient number, since it is larger than the sum of its proper divisors (1).

25134847 is an equidigital number, since it uses as much as digits as its factorization.

25134847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 34.

The square root of 25134847 is about 5013.4665651623. The cubic root of 25134847 is about 292.9265581013.

Adding to 25134847 its reverse (74843152), we get a palindrome (99977999).

The spelling of 25134847 in words is "twenty-five million, one hundred thirty-four thousand, eight hundred forty-seven".