225404155 has 8 divisors (see below), whose sum is σ = 270645984. Its totient is φ = 180216000.

The previous prime is 225404149. The next prime is 225404161. The reversal of 225404155 is 551404522.

It is an interprime number because it is at equal distance from previous prime (225404149) and next prime (225404161).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225404155 - 2²¹ = 223307003 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 3511 + ... + 21520.

It is an arithmetic number, because the mean of its divisors is an integer number (33830748).

Almost surely, 2^225404155 is an apocalyptic number.

225404155 is a deficient number, since it is larger than the sum of its proper divisors (45241829).

225404155 is a wasteful number, since it uses less digits than its factorization.

225404155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26837.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 225404155 is about 15013.4657890841. The cubic root of 225404155 is about 608.5841524463.

Adding to 225404155 its reverse (551404522), we get a palindrome (776808677).

The spelling of 225404155 in words is "two hundred twenty-five million, four hundred four thousand, one hundred fifty-five".