225231555 has 32 divisors (see below), whose sum is σ = 387293184. Its totient is φ = 111361536.

The previous prime is 225231541. The next prime is 225231557. The reversal of 225231555 is 555132522.

225231555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 225231555 - 2⁷ = 225231427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225231557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10494 + ... + 23676.

It is an arithmetic number, because the mean of its divisors is an integer number (12102912).

Almost surely, 2^225231555 is an apocalyptic number.

225231555 is a deficient number, since it is larger than the sum of its proper divisors (162061629).

225231555 is a wasteful number, since it uses less digits than its factorization.

225231555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13275.

The product of its digits is 15000, while the sum is 30.

The square root of 225231555 is about 15007.7165151798. The cubic root of 225231555 is about 608.4287745836.

The spelling of 225231555 in words is "two hundred twenty-five million, two hundred thirty-one thousand, five hundred fifty-five".