225541553 has 4 divisors (see below), whose sum is σ = 229797108. Its totient is φ = 221286000.

The previous prime is 225541549. The next prime is 225541577. The reversal of 225541553 is 355145522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91259809 + 134281744 = 9553^2 + 11588^2 .

It is a cyclic number.

It is not a de Polignac number, because 225541553 - 2² = 225541549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225541543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2127698 + ... + 2127803.

It is an arithmetic number, because the mean of its divisors is an integer number (57449277).

Almost surely, 2^225541553 is an apocalyptic number.

It is an amenable number.

225541553 is a deficient number, since it is larger than the sum of its proper divisors (4255555).

225541553 is an equidigital number, since it uses as much as digits as its factorization.

225541553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4255554.

The product of its digits is 30000, while the sum is 32.

The square root of 225541553 is about 15018.0409175098. The cubic root of 225541553 is about 608.7077840935.

The spelling of 225541553 in words is "two hundred twenty-five million, five hundred forty-one thousand, five hundred fifty-three".