25994417 has 2 divisors, whose sum is σ = 25994418. Its totient is φ = 25994416.

The previous prime is 25994389. The next prime is 25994447. The reversal of 25994417 is 71449952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14167696 + 11826721 = 3764^2 + 3439^2 .

It is a cyclic number.

It is not a de Polignac number, because 25994417 - 2¹⁰ = 25993393 is a prime.

It is not a weakly prime, because it can be changed into another prime (25994447) 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, 12997208 + 12997209.

It is an arithmetic number, because the mean of its divisors is an integer number (12997209).

Almost surely, 2^25994417 is an apocalyptic number.

It is an amenable number.

25994417 is a deficient number, since it is larger than the sum of its proper divisors (1).

25994417 is an equidigital number, since it uses as much as digits as its factorization.

25994417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 25994417 is about 5098.4720260094. The cubic root of 25994417 is about 296.2284006875.

The spelling of 25994417 in words is "twenty-five million, nine hundred ninety-four thousand, four hundred seventeen".