5518225 has 12 divisors (see below), whose sum is σ = 6912256. Its totient is φ = 4369680.

The previous prime is 5518171. The next prime is 5518241. The reversal of 5518225 is 5228155.

It is not a de Polignac number, because 5518225 - 2¹⁵ = 5485457 is a prime.

It is a Duffinian number.

5518225 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5518193 and 5518202.

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, 1504 + ... + 3646.

Almost surely, 2^5518225 is an apocalyptic number.

It is an amenable number.

5518225 is a deficient number, since it is larger than the sum of its proper divisors (1394031).

5518225 is a wasteful number, since it uses less digits than its factorization.

5518225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256 (or 2251 counting only the distinct ones).

The product of its digits is 4000, while the sum is 28.

The square root of 5518225 is about 2349.0902494370. The cubic root of 5518225 is about 176.7121733173.

The spelling of 5518225 in words is "five million, five hundred eighteen thousand, two hundred twenty-five".