225435251 has 4 divisors (see below), whose sum is σ = 225466512. Its totient is φ = 225403992.

The previous prime is 225435239. The next prime is 225435257. The reversal of 225435251 is 152534522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 225435251 - 2¹⁰ = 225434227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225435257) 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, 1301 + ... + 21273.

It is an arithmetic number, because the mean of its divisors is an integer number (56366628).

Almost surely, 2^225435251 is an apocalyptic number.

225435251 is a deficient number, since it is larger than the sum of its proper divisors (31261).

225435251 is a wasteful number, since it uses less digits than its factorization.

225435251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31260.

The product of its digits is 12000, while the sum is 29.

The square root of 225435251 is about 15014.5013570215. The cubic root of 225435251 is about 608.6121372345.

Adding to 225435251 its reverse (152534522), we get a palindrome (377969773).

The spelling of 225435251 in words is "two hundred twenty-five million, four hundred thirty-five thousand, two hundred fifty-one".