225171253 has 4 divisors (see below), whose sum is σ = 225658048. Its totient is φ = 224684460.

The previous prime is 225171229. The next prime is 225171257. The reversal of 225171253 is 352171522.

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: 352171522 = 2 ⋅176085761.

It is a cyclic number.

It is not a de Polignac number, because 225171253 - 2⁹ = 225170741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225171257) 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, 242703 + ... + 243628.

It is an arithmetic number, because the mean of its divisors is an integer number (56414512).

Almost surely, 2^225171253 is an apocalyptic number.

It is an amenable number.

225171253 is a deficient number, since it is larger than the sum of its proper divisors (486795).

225171253 is an equidigital number, since it uses as much as digits as its factorization.

225171253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486794.

The product of its digits is 4200, while the sum is 28.

The square root of 225171253 is about 15005.7073475395. The cubic root of 225171253 is about 608.3744708446.

The spelling of 225171253 in words is "two hundred twenty-five million, one hundred seventy-one thousand, two hundred fifty-three".