25906913 has 2 divisors, whose sum is σ = 25906914. Its totient is φ = 25906912.

The previous prime is 25906871. The next prime is 25906927. The reversal of 25906913 is 31960952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25120144 + 786769 = 5012^2 + 887^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25906913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25906973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12953456 + 12953457.

It is an arithmetic number, because the mean of its divisors is an integer number (12953457).

Almost surely, 2^25906913 is an apocalyptic number.

It is an amenable number.

25906913 is a deficient number, since it is larger than the sum of its proper divisors (1).

25906913 is an equidigital number, since it uses as much as digits as its factorization.

25906913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 25906913 is about 5089.8833974856. The cubic root of 25906913 is about 295.8956329461.

The spelling of 25906913 in words is "twenty-five million, nine hundred six thousand, nine hundred thirteen".