4216225 has 12 divisors (see below), whose sum is σ = 5630716. Its totient is φ = 3113280.

The previous prime is 4216211. The next prime is 4216231. The reversal of 4216225 is 5226124.

4216225 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 6 ways, for example, as 1745041 + 2471184 = 1321^2 + 1572^2 .

It is not a de Polignac number, because 4216225 - 2¹⁵ = 4183457 is a prime.

4216225 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4216196 and 4216205.

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, 6162 + ... + 6811.

Almost surely, 2^4216225 is an apocalyptic number.

It is an amenable number.

4216225 is a deficient number, since it is larger than the sum of its proper divisors (1414491).

4216225 is a wasteful number, since it uses less digits than its factorization.

4216225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12996 (or 12991 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 4216225 is about 2053.3448322189. The cubic root of 4216225 is about 161.5503585924.

It can be divided in two parts, 4 and 216225, that multiplied together give a square (864900 = 930²).

The spelling of 4216225 in words is "four million, two hundred sixteen thousand, two hundred twenty-five".