225955 has 4 divisors (see below), whose sum is σ = 271152. Its totient is φ = 180760.

The previous prime is 225949. The next prime is 225961. The reversal of 225955 is 559522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 559522 = 2 ⋅279761.

It is an interprime number because it is at equal distance from previous prime (225949) and next prime (225961).

It is a de Polignac number, because none of the positive numbers 2^k-225955 is a prime.

It is a Duffinian number.

225955 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22591 + ... + 22600.

It is an arithmetic number, because the mean of its divisors is an integer number (67788).

2²²⁵⁹⁵⁵ is an apocalyptic number.

225955 is a deficient number, since it is larger than the sum of its proper divisors (45197).

225955 is an equidigital number, since it uses as much as digits as its factorization.

225955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45196.

The product of its digits is 4500, while the sum is 28.

The square root of 225955 is about 475.3472414983. The cubic root of 225955 is about 60.9079503894.

The spelling of 225955 in words is "two hundred twenty-five thousand, nine hundred fifty-five".