17222725 has 24 divisors (see below), whose sum is σ = 23201640. Its totient is φ = 12606720.

The previous prime is 17222713. The next prime is 17222729. The reversal of 17222725 is 52722271.

It can be written as a sum of positive squares in 12 ways, for example, as 6666724 + 10556001 = 2582^2 + 3249^2 .

It is not a de Polignac number, because 17222725 - 2⁹ = 17222213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17222693 and 17222702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17222729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63891 + ... + 64159.

It is an arithmetic number, because the mean of its divisors is an integer number (966735).

Almost surely, 2^17222725 is an apocalyptic number.

It is an amenable number.

17222725 is a deficient number, since it is larger than the sum of its proper divisors (5978915).

17222725 is a wasteful number, since it uses less digits than its factorization.

17222725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 484 counting only the distinct ones).

The product of its digits is 3920, while the sum is 28.

The square root of 17222725 is about 4150.0271083452. The cubic root of 17222725 is about 258.2462094920.

Adding to 17222725 its reverse (52722271), we get a palindrome (69944996).

The spelling of 17222725 in words is "seventeen million, two hundred twenty-two thousand, seven hundred twenty-five".