225214451 has 16 divisors (see below), whose sum is σ = 281629440. Its totient is φ = 174965280.

The previous prime is 225214447. The next prime is 225214489. The reversal of 225214451 is 154412522.

It is not a de Polignac number, because 225214451 - 2² = 225214447 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 225214451.

It is not an unprimeable number, because it can be changed into a prime (225214051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22505 + ... + 30933.

It is an arithmetic number, because the mean of its divisors is an integer number (17601840).

Almost surely, 2^225214451 is an apocalyptic number.

225214451 is a deficient number, since it is larger than the sum of its proper divisors (56414989).

225214451 is a wasteful number, since it uses less digits than its factorization.

225214451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8794.

The product of its digits is 3200, while the sum is 26.

The square root of 225214451 is about 15007.1466641730. The cubic root of 225214451 is about 608.4133729093.

Adding to 225214451 its reverse (154412522), we get a palindrome (379626973).

The spelling of 225214451 in words is "two hundred twenty-five million, two hundred fourteen thousand, four hundred fifty-one".