25422217 has 4 divisors (see below), whose sum is σ = 25437456. Its totient is φ = 25406980.

The previous prime is 25422193. The next prime is 25422233. The reversal of 25422217 is 71222452.

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 25422217 - 2¹¹ = 25420169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25422191 and 25422200.

It is not an unprimeable number, because it can be changed into a prime (25426217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4759 + ... + 8572.

It is an arithmetic number, because the mean of its divisors is an integer number (6359364).

Almost surely, 2^25422217 is an apocalyptic number.

It is an amenable number.

25422217 is a deficient number, since it is larger than the sum of its proper divisors (15239).

25422217 is a wasteful number, since it uses less digits than its factorization.

25422217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15238.

The product of its digits is 2240, while the sum is 25.

The square root of 25422217 is about 5042.0449224496. The cubic root of 25422217 is about 294.0386863495.

Adding to 25422217 its reverse (71222452), we get a palindrome (96644669).

The spelling of 25422217 in words is "twenty-five million, four hundred twenty-two thousand, two hundred seventeen".