225510405 has 8 divisors (see below), whose sum is σ = 360816672. Its totient is φ = 120272208.

The previous prime is 225510401. The next prime is 225510407. The reversal of 225510405 is 504015522.

It is a happy number.

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

It is not a de Polignac number, because 225510405 - 2² = 225510401 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225510401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7516999 + ... + 7517028.

It is an arithmetic number, because the mean of its divisors is an integer number (45102084).

Almost surely, 2^225510405 is an apocalyptic number.

It is an amenable number.

225510405 is a deficient number, since it is larger than the sum of its proper divisors (135306267).

225510405 is a wasteful number, since it uses less digits than its factorization.

225510405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15034035.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 225510405 is about 15017.0038622889. The cubic root of 225510405 is about 608.6797613150.

Adding to 225510405 its reverse (504015522), we get a palindrome (729525927).

The spelling of 225510405 in words is "two hundred twenty-five million, five hundred ten thousand, four hundred five".