2225155 has 4 divisors (see below), whose sum is σ = 2670192. Its totient is φ = 1780120.

The previous prime is 2225123. The next prime is 2225159. The reversal of 2225155 is 5515222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5515222 = 2 ⋅2757611.

It is not a de Polignac number, because 2225155 - 2⁵ = 2225123 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2225159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222511 + ... + 222520.

It is an arithmetic number, because the mean of its divisors is an integer number (667548).

2^2225155 is an apocalyptic number.

2225155 is a deficient number, since it is larger than the sum of its proper divisors (445037).

2225155 is an equidigital number, since it uses as much as digits as its factorization.

2225155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445036.

The product of its digits is 1000, while the sum is 22.

The square root of 2225155 is about 1491.6953442309. The cubic root of 2225155 is about 130.5529699872.

The spelling of 2225155 in words is "two million, two hundred twenty-five thousand, one hundred fifty-five".