4518225 has 36 divisors (see below), whose sum is σ = 8298576. Its totient is φ = 2348640.

The previous prime is 4518221. The next prime is 4518233. The reversal of 4518225 is 5228154.

4518225 = 396² + 397² + ... + 422².

It is a happy number.

It is not a de Polignac number, because 4518225 - 2² = 4518221 is a prime.

4518225 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4518221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9442 + ... + 9908.

It is an arithmetic number, because the mean of its divisors is an integer number (230516).

Almost surely, 2^4518225 is an apocalyptic number.

4518225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4518225 is a deficient number, since it is larger than the sum of its proper divisors (3780351).

4518225 is a wasteful number, since it uses less digits than its factorization.

4518225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 518 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 4518225 is about 2125.6116766710. The cubic root of 4518225 is about 165.3189423211.

The spelling of 4518225 in words is "four million, five hundred eighteen thousand, two hundred twenty-five".