225915455 has 4 divisors (see below), whose sum is σ = 271098552. Its totient is φ = 180732360.

The previous prime is 225915427. The next prime is 225915461. The reversal of 225915455 is 554519522.

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

It is not a de Polignac number, because 225915455 - 2¹⁰ = 225914431 is a prime.

It is a Duffinian number.

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, 22591541 + ... + 22591550.

It is an arithmetic number, because the mean of its divisors is an integer number (67774638).

Almost surely, 2^225915455 is an apocalyptic number.

225915455 is a deficient number, since it is larger than the sum of its proper divisors (45183097).

225915455 is an equidigital number, since it uses as much as digits as its factorization.

225915455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45183096.

The product of its digits is 90000, while the sum is 38.

The square root of 225915455 is about 15030.4841904710. The cubic root of 225915455 is about 609.0439696001.

The spelling of 225915455 in words is "two hundred twenty-five million, nine hundred fifteen thousand, four hundred fifty-five".