25417 has 4 divisors (see below), whose sum is σ = 29056. Its totient is φ = 21780.

The previous prime is 25411. The next prime is 25423. The reversal of 25417 is 71452.

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 an interprime number because it is at equal distance from previous prime (25411) and next prime (25423).

It is a cyclic number.

It is not a de Polignac number, because 25417 - 2³ = 25409 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 25394 and 25403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1809 + ... + 1822.

It is an arithmetic number, because the mean of its divisors is an integer number (7264).

2²⁵⁴¹⁷ is an apocalyptic number.

It is an amenable number.

25417 is a deficient number, since it is larger than the sum of its proper divisors (3639).

25417 is an equidigital number, since it uses as much as digits as its factorization.

25417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638.

The product of its digits is 280, while the sum is 19.

The square root of 25417 is about 159.4270993276. The cubic root of 25417 is about 29.4018571335.

Adding to 25417 its reverse (71452), we get a palindrome (96869).

The spelling of 25417 in words is "twenty-five thousand, four hundred seventeen".