225278451 has 6 divisors (see below), whose sum is σ = 325402220. Its totient is φ = 150185628.

The previous prime is 225278413. The next prime is 225278479. The reversal of 225278451 is 154872522.

It is a happy number.

225278451 is a `hidden beast` number, since 2 + 2 + 527 + 84 + 51 = 666.

It is not a de Polignac number, because 225278451 - 2²³ = 216889843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225278051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12515461 + ... + 12515478.

Almost surely, 2^225278451 is an apocalyptic number.

225278451 is a deficient number, since it is larger than the sum of its proper divisors (100123769).

225278451 is a wasteful number, since it uses less digits than its factorization.

225278451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25030945 (or 25030942 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 225278451 is about 15009.2788301104. The cubic root of 225278451 is about 608.4709991227.

The spelling of 225278451 in words is "two hundred twenty-five million, two hundred seventy-eight thousand, four hundred fifty-one".