225415 has 4 divisors (see below), whose sum is σ = 270504. Its totient is φ = 180328.

The previous prime is 225383. The next prime is 225427. The reversal of 225415 is 514522.

225415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225415 - 2⁵ = 225383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225392 and 225401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22537 + ... + 22546.

It is an arithmetic number, because the mean of its divisors is an integer number (67626).

2²²⁵⁴¹⁵ is an apocalyptic number.

225415 is a deficient number, since it is larger than the sum of its proper divisors (45089).

225415 is an equidigital number, since it uses as much as digits as its factorization.

225415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45088.

The product of its digits is 400, while the sum is 19.

The square root of 225415 is about 474.7788959084. The cubic root of 225415 is about 60.8593912676.

Adding to 225415 its reverse (514522), we get a palindrome (739937).

The spelling of 225415 in words is "two hundred twenty-five thousand, four hundred fifteen".