25880017 has 2 divisors, whose sum is σ = 25880018. Its totient is φ = 25880016.

The previous prime is 25880011. The next prime is 25880021. The reversal of 25880017 is 71008852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21381376 + 4498641 = 4624^2 + 2121^2 .

It is a cyclic number.

It is not a de Polignac number, because 25880017 - 2¹⁵ = 25847249 is a prime.

It is not a weakly prime, because it can be changed into another prime (25880011) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12940008 + 12940009.

It is an arithmetic number, because the mean of its divisors is an integer number (12940009).

Almost surely, 2^25880017 is an apocalyptic number.

It is an amenable number.

25880017 is a deficient number, since it is larger than the sum of its proper divisors (1).

25880017 is an equidigital number, since it uses as much as digits as its factorization.

25880017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 25880017 is about 5087.2406076379. The cubic root of 25880017 is about 295.7931999955.

Adding to 25880017 its reverse (71008852), we get a palindrome (96888869).

The spelling of 25880017 in words is "twenty-five million, eight hundred eighty thousand, seventeen".