16312225 has 12 divisors (see below), whose sum is σ = 20356336. Its totient is φ = 12966480.

The previous prime is 16312223. The next prime is 16312237. The reversal of 16312225 is 52221361.

It is not a de Polignac number, because 16312225 - 2¹ = 16312223 is a prime.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16312196 and 16312205.

It is not an unprimeable number, because it can be changed into a prime (16312223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2074 + ... + 6076.

Almost surely, 2^16312225 is an apocalyptic number.

It is an amenable number.

16312225 is a deficient number, since it is larger than the sum of its proper divisors (4044111).

16312225 is a wasteful number, since it uses less digits than its factorization.

16312225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176 (or 4171 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 16312225 is about 4038.8395610621. The cubic root of 16312225 is about 253.6127409286.

Adding to 16312225 its reverse (52221361), we get a palindrome (68533586).

The spelling of 16312225 in words is "sixteen million, three hundred twelve thousand, two hundred twenty-five".