225143451 has 12 divisors (see below), whose sum is σ = 350223328. Its totient is φ = 138549744.

The previous prime is 225143447. The next prime is 225143453. The reversal of 225143451 is 154341522.

225143451 is a `hidden beast` number, since 225 + 1 + 434 + 5 + 1 = 666.

It is not a de Polignac number, because 225143451 - 2² = 225143447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225143453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 962035 + ... + 962268.

Almost surely, 2^225143451 is an apocalyptic number.

225143451 is a deficient number, since it is larger than the sum of its proper divisors (125079877).

225143451 is a wasteful number, since it uses less digits than its factorization.

225143451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924322 (or 1924319 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 225143451 is about 15004.7809380877. The cubic root of 225143451 is about 608.3494310538.

Adding to 225143451 its reverse (154341522), we get a palindrome (379484973).

The spelling of 225143451 in words is "two hundred twenty-five million, one hundred forty-three thousand, four hundred fifty-one".