25009217 has 8 divisors (see below), whose sum is σ = 25785216. Its totient is φ = 24243472.

The previous prime is 25009189. The next prime is 25009241. The reversal of 25009217 is 71290052.

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 25009217 - 2⁸ = 25008961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25009417) 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 in 7 ways as a sum of consecutive naturals, for example, 2543 + ... + 7515.

It is an arithmetic number, because the mean of its divisors is an integer number (3223152).

Almost surely, 2^25009217 is an apocalyptic number.

It is an amenable number.

25009217 is a deficient number, since it is larger than the sum of its proper divisors (775999).

25009217 is a wasteful number, since it uses less digits than its factorization.

25009217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5127.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 25009217 is about 5000.9216150626. The cubic root of 25009217 is about 292.4377036348.

Adding to 25009217 its reverse (71290052), we get a palindrome (96299269).

The spelling of 25009217 in words is "twenty-five million, nine thousand, two hundred seventeen".