16142225 has 12 divisors (see below), whose sum is σ = 21836400. Its totient is φ = 11739600.

The previous prime is 16142221. The next prime is 16142237. The reversal of 16142225 is 52224161.

It is a happy number.

It is not a de Polignac number, because 16142225 - 2² = 16142221 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16142225.

It is not an unprimeable number, because it can be changed into a prime (16142221) 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, 29075 + ... + 29624.

It is an arithmetic number, because the mean of its divisors is an integer number (1819700).

Almost surely, 2^16142225 is an apocalyptic number.

It is an amenable number.

16142225 is a deficient number, since it is larger than the sum of its proper divisors (5694175).

16142225 is a wasteful number, since it uses less digits than its factorization.

16142225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58720 (or 58715 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 16142225 is about 4017.7387919077. The cubic root of 16142225 is about 252.7286430101.

Adding to 16142225 its reverse (52224161), we get a palindrome (68366386).

It can be divided in two parts, 16 and 142225, that added together give a palindrome (142241).

The spelling of 16142225 in words is "sixteen million, one hundred forty-two thousand, two hundred twenty-five".