225203915 has 8 divisors (see below), whose sum is σ = 272636928. Its totient is φ = 178568320.

The previous prime is 225203873. The next prime is 225203917. The reversal of 225203915 is 519302522.

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

It is not a de Polignac number, because 225203915 - 2⁶ = 225203851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225203917) 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, 198731 + ... + 199860.

It is an arithmetic number, because the mean of its divisors is an integer number (34079616).

Almost surely, 2^225203915 is an apocalyptic number.

225203915 is a deficient number, since it is larger than the sum of its proper divisors (47433013).

225203915 is a wasteful number, since it uses less digits than its factorization.

225203915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398709.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 225203915 is about 15006.7956273150. The cubic root of 225203915 is about 608.4038851474.

The spelling of 225203915 in words is "two hundred twenty-five million, two hundred three thousand, nine hundred fifteen".