225240055 has 16 divisors (see below), whose sum is σ = 286606944. Its totient is φ = 169344000.

The previous prime is 225240047. The next prime is 225240061. The reversal of 225240055 is 550042522.

It is a happy number.

It is not a de Polignac number, because 225240055 - 2³ = 225240047 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 73555 + ... + 76555.

It is an arithmetic number, because the mean of its divisors is an integer number (17912934).

Almost surely, 2^225240055 is an apocalyptic number.

225240055 is a deficient number, since it is larger than the sum of its proper divisors (61366889).

225240055 is a wasteful number, since it uses less digits than its factorization.

225240055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 225240055 is about 15007.9997001599. Note that the first 3 decimals coincide. The cubic root of 225240055 is about 608.4364283062.

Adding to 225240055 its reverse (550042522), we get a palindrome (775282577).

The spelling of 225240055 in words is "two hundred twenty-five million, two hundred forty thousand, fifty-five".