16162225 has 12 divisors (see below), whose sum is σ = 20189680. Its totient is φ = 12834000.

The previous prime is 16162187. The next prime is 16162231. The reversal of 16162225 is 52226161.

It is not a de Polignac number, because 16162225 - 2²³ = 7773617 is a prime.

It is a super-2 number, since 2×16162225² = 522435033901250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 16162225.

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, 1150 + ... + 5800.

Almost surely, 2^16162225 is an apocalyptic number.

It is an amenable number.

16162225 is a deficient number, since it is larger than the sum of its proper divisors (4027455).

16162225 is a wasteful number, since it uses less digits than its factorization.

16162225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800 (or 4795 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 16162225 is about 4020.2269836416. The cubic root of 16162225 is about 252.8329757313.

Adding to 16162225 its reverse (52226161), we get a palindrome (68388386).

The spelling of 16162225 in words is "sixteen million, one hundred sixty-two thousand, two hundred twenty-five".