4815225 has 18 divisors (see below), whose sum is σ = 8625006. Its totient is φ = 2568000.

The previous prime is 4815221. The next prime is 4815229. The reversal of 4815225 is 5225184.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4815221) and next prime (4815229).

It can be written as a sum of positive squares in 3 ways, for example, as 45369 + 4769856 = 213^2 + 2184^2 .

It is not a de Polignac number, because 4815225 - 2² = 4815221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4815221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10476 + ... + 10925.

It is an arithmetic number, because the mean of its divisors is an integer number (479167).

Almost surely, 2^4815225 is an apocalyptic number.

4815225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4815225 is a deficient number, since it is larger than the sum of its proper divisors (3809781).

4815225 is a wasteful number, since it uses less digits than its factorization.

4815225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21417 (or 21409 counting only the distinct ones).

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

The square root of 4815225 is about 2194.3620940948. The cubic root of 4815225 is about 168.8646956887.

The spelling of 4815225 in words is "four million, eight hundred fifteen thousand, two hundred twenty-five".