16012225 has 12 divisors (see below), whose sum is σ = 19937340. Its totient is φ = 12756800.

The previous prime is 16012219. The next prime is 16012247. The reversal of 16012225 is 52221061.

16012225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 7969329 + 8042896 = 2823^2 + 2836^2 .

It is not a de Polignac number, because 16012225 - 2⁷ = 16012097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5535 + ... + 7915.

It is an arithmetic number, because the mean of its divisors is an integer number (1661445).

Almost surely, 2^16012225 is an apocalyptic number.

It is an amenable number.

16012225 is a deficient number, since it is larger than the sum of its proper divisors (3925115).

16012225 is a wasteful number, since it uses less digits than its factorization.

16012225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660 (or 2655 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 16012225 is about 4001.5278332157. The cubic root of 16012225 is about 252.0483708693.

Adding to 16012225 its reverse (52221061), we get a palindrome (68233286).

The spelling of 16012225 in words is "sixteen million, twelve thousand, two hundred twenty-five".