225553 has 4 divisors (see below), whose sum is σ = 230400. Its totient is φ = 220708.

The previous prime is 225529. The next prime is 225569. The reversal of 225553 is 355522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 355522 = 2 ⋅177761.

It is a cyclic number.

It is not a de Polignac number, because 225553 - 2¹³ = 217361 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (225503) 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, 2353 + ... + 2446.

It is an arithmetic number, because the mean of its divisors is an integer number (57600).

2²²⁵⁵⁵³ is an apocalyptic number.

It is an amenable number.

225553 is a deficient number, since it is larger than the sum of its proper divisors (4847).

225553 is an equidigital number, since it uses as much as digits as its factorization.

225553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4846.

The product of its digits is 1500, while the sum is 22.

The square root of 225553 is about 474.9242044790. The cubic root of 225553 is about 60.8718081915.

The spelling of 225553 in words is "two hundred twenty-five thousand, five hundred fifty-three".