25220317 has 8 divisors (see below), whose sum is σ = 26246880. Its totient is φ = 24213840.

The previous prime is 25220303. The next prime is 25220339. The reversal of 25220317 is 71302252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25220317 - 2¹¹ = 25218269 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25220417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2434 + ... + 7507.

It is an arithmetic number, because the mean of its divisors is an integer number (3280860).

Almost surely, 2^25220317 is an apocalyptic number.

It is an amenable number.

25220317 is a deficient number, since it is larger than the sum of its proper divisors (1026563).

25220317 is an equidigital number, since it uses as much as digits as its factorization.

25220317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10043.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 25220317 is about 5021.9833731306. The cubic root of 25220317 is about 293.2582106468.

Adding to 25220317 its reverse (71302252), we get a palindrome (96522569).

The spelling of 25220317 in words is "twenty-five million, two hundred twenty thousand, three hundred seventeen".