25985717 has 4 divisors (see below), whose sum is σ = 26590080. Its totient is φ = 25381356.

The previous prime is 25985693. The next prime is 25985747. The reversal of 25985717 is 71758952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25985717 - 2¹² = 25981621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25985747) 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 in 3 ways as a sum of consecutive naturals, for example, 302117 + ... + 302202.

It is an arithmetic number, because the mean of its divisors is an integer number (6647520).

Almost surely, 2^25985717 is an apocalyptic number.

It is an amenable number.

25985717 is a deficient number, since it is larger than the sum of its proper divisors (604363).

25985717 is an equidigital number, since it uses as much as digits as its factorization.

25985717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604362.

The product of its digits is 176400, while the sum is 44.

The square root of 25985717 is about 5097.6187578123. The cubic root of 25985717 is about 296.1953490434.

The spelling of 25985717 in words is "twenty-five million, nine hundred eighty-five thousand, seven hundred seventeen".