17152225 has 6 divisors (see below), whose sum is σ = 21268790. Its totient is φ = 13721760.

The previous prime is 17152217. The next prime is 17152229. The reversal of 17152225 is 52225171.

17152225 = 2928² + 2929².

It can be written as a sum of positive squares in 3 ways, for example, as 3968064 + 13184161 = 1992^2 + 3631^2 .

It is not a de Polignac number, because 17152225 - 2³ = 17152217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 686089 = 17152225 / (1 + 7 + 1 + 5 + 2 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 17152225.

It is not an unprimeable number, because it can be changed into a prime (17152229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 343020 + ... + 343069.

Almost surely, 2^17152225 is an apocalyptic number.

17152225 is the 2929-th centered square number.

It is an amenable number.

17152225 is a deficient number, since it is larger than the sum of its proper divisors (4116565).

17152225 is an equidigital number, since it uses as much as digits as its factorization.

17152225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686099 (or 686094 counting only the distinct ones).

The product of its digits is 1400, while the sum is 25.

The square root of 17152225 is about 4141.5244777739. The cubic root of 17152225 is about 257.8933567628.

Adding to 17152225 its reverse (52225171), we get a palindrome (69377396).

The spelling of 17152225 in words is "seventeen million, one hundred fifty-two thousand, two hundred twenty-five".