16226725 has 6 divisors (see below), whose sum is σ = 20121170. Its totient is φ = 12981360.

The previous prime is 16226713. The next prime is 16226729. The reversal of 16226725 is 52762261.

It can be written as a sum of positive squares in 3 ways, for example, as 1855044 + 14371681 = 1362^2 + 3791^2 .

It is not a de Polignac number, because 16226725 - 2⁷ = 16226597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16226729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 324510 + ... + 324559.

Almost surely, 2^16226725 is an apocalyptic number.

It is an amenable number.

16226725 is a deficient number, since it is larger than the sum of its proper divisors (3894445).

16226725 is an equidigital number, since it uses as much as digits as its factorization.

16226725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649079 (or 649074 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 16226725 is about 4028.2409312254. The cubic root of 16226725 is about 253.1688635056.

Adding to 16226725 its reverse (52762261), we get a palindrome (68988986).

The spelling of 16226725 in words is "sixteen million, two hundred twenty-six thousand, seven hundred twenty-five".