225450553 has 4 divisors (see below), whose sum is σ = 233224740. Its totient is φ = 217676368.

The previous prime is 225450539. The next prime is 225450581. The reversal of 225450553 is 355054522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 355054522 = 2 ⋅177527261.

It can be written as a sum of positive squares in 2 ways, for example, as 164172969 + 61277584 = 12813^2 + 7828^2 .

It is a cyclic number.

It is not a de Polignac number, because 225450553 - 2⁵ = 225450521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225450503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3887050 + ... + 3887107.

It is an arithmetic number, because the mean of its divisors is an integer number (58306185).

Almost surely, 2^225450553 is an apocalyptic number.

It is an amenable number.

225450553 is a deficient number, since it is larger than the sum of its proper divisors (7774187).

225450553 is an equidigital number, since it uses as much as digits as its factorization.

225450553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7774186.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 225450553 is about 15015.0109224069. The cubic root of 225450553 is about 608.6259072966.

The spelling of 225450553 in words is "two hundred twenty-five million, four hundred fifty thousand, five hundred fifty-three".