225235451 has 4 divisors (see below), whose sum is σ = 257411952. Its totient is φ = 193058952.

The previous prime is 225235433. The next prime is 225235463. The reversal of 225235451 is 154532522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225235451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225235051) 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, 16088240 + ... + 16088253.

It is an arithmetic number, because the mean of its divisors is an integer number (64352988).

Almost surely, 2^225235451 is an apocalyptic number.

225235451 is a deficient number, since it is larger than the sum of its proper divisors (32176501).

225235451 is an equidigital number, since it uses as much as digits as its factorization.

225235451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32176500.

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

The square root of 225235451 is about 15007.8463145116. The cubic root of 225235451 is about 608.4322827138.

Adding to 225235451 its reverse (154532522), we get a palindrome (379767973).

The spelling of 225235451 in words is "two hundred twenty-five million, two hundred thirty-five thousand, four hundred fifty-one".