16227025 has 6 divisors (see below), whose sum is σ = 20121542. Its totient is φ = 12981600.

The previous prime is 16227023. The next prime is 16227031. The reversal of 16227025 is 52072261.

It can be written as a sum of positive squares in 3 ways, for example, as 219024 + 16008001 = 468^2 + 4001^2 .

It is not a de Polignac number, because 16227025 - 2¹ = 16227023 is a prime.

It is a super-3 number, since 3×16227025³ (a number of 23 digits) contains 333 as substring.

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: 649081 = 16227025 / (1 + 6 + 2 + 2 + 7 + 0 + 2 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16227023) 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, 324516 + ... + 324565.

Almost surely, 2^16227025 is an apocalyptic number.

It is an amenable number.

16227025 is a deficient number, since it is larger than the sum of its proper divisors (3894517).

16227025 is an equidigital number, since it uses as much as digits as its factorization.

16227025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649091 (or 649086 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 16227025 is about 4028.2781681508. The cubic root of 16227025 is about 253.1704236929.

Adding to 16227025 its reverse (52072261), we get a palindrome (68299286).

The spelling of 16227025 in words is "sixteen million, two hundred twenty-seven thousand, twenty-five".