2147225 has 6 divisors (see below), whose sum is σ = 2662590. Its totient is φ = 1717760.

The previous prime is 2147213. The next prime is 2147231. The reversal of 2147225 is 5227412.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 602176 + 1545049 = 776^2 + 1243^2 .

It is not a de Polignac number, because 2147225 - 2⁶ = 2147161 is a prime.

It is a super-2 number, since 2×2147225² = 9221150401250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2147225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42920 + ... + 42969.

It is an arithmetic number, because the mean of its divisors is an integer number (443765).

2^2147225 is an apocalyptic number.

2147225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2147225 is a deficient number, since it is larger than the sum of its proper divisors (515365).

2147225 is an equidigital number, since it uses as much as digits as its factorization.

2147225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85899 (or 85894 counting only the distinct ones).

The product of its digits is 1120, while the sum is 23.

The square root of 2147225 is about 1465.3412571821. The cubic root of 2147225 is about 129.0107356408.

The spelling of 2147225 in words is "two million, one hundred forty-seven thousand, two hundred twenty-five".