225280815 has 16 divisors (see below), whose sum is σ = 379420800. Its totient is φ = 113825952.

The previous prime is 225280789. The next prime is 225280819. The reversal of 225280815 is 518082522.

It is not a de Polignac number, because 225280815 - 2¹⁹ = 224756527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225280819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394945 + ... + 395514.

It is an arithmetic number, because the mean of its divisors is an integer number (23713800).

Almost surely, 2^225280815 is an apocalyptic number.

225280815 is a deficient number, since it is larger than the sum of its proper divisors (154139985).

225280815 is a wasteful number, since it uses less digits than its factorization.

225280815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790486.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 225280815 is about 15009.3575811891. The cubic root of 225280815 is about 608.4731274819.

The spelling of 225280815 in words is "two hundred twenty-five million, two hundred eighty thousand, eight hundred fifteen".