225605253 has 4 divisors (see below), whose sum is σ = 300807008. Its totient is φ = 150403500.

The previous prime is 225605251. The next prime is 225605273. The reversal of 225605253 is 352506522.

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.

It is not a de Polignac number, because 225605253 - 2¹ = 225605251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225605253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225605251) 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, 37600873 + ... + 37600878.

It is an arithmetic number, because the mean of its divisors is an integer number (75201752).

Almost surely, 2^225605253 is an apocalyptic number.

It is an amenable number.

225605253 is a deficient number, since it is larger than the sum of its proper divisors (75201755).

225605253 is an equidigital number, since it uses as much as digits as its factorization.

225605253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75201754.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 225605253 is about 15020.1615503962. The cubic root of 225605253 is about 608.7650847483.

The spelling of 225605253 in words is "two hundred twenty-five million, six hundred five thousand, two hundred fifty-three".