225385663504 has 15 divisors (see below), whose sum is σ = 436688402367. Its totient is φ = 112691882256.

The previous prime is 225385663493. The next prime is 225385663541. The reversal of 225385663504 is 405366583522.

The square root of 225385663504 is 474748.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1839649 + ... + 1958335.

Almost surely, 2^225385663504 is an apocalyptic number.

225385663504 is the 474748-th square number.

It is an amenable number.

225385663504 is a deficient number, since it is larger than the sum of its proper divisors (211302738863).

225385663504 is an frugal number, since it uses more digits than its factorization.

225385663504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237382 (or 118689 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 49.

Multiplying 225385663504 by its sum of digits (49), we get a square (11043897511696 = 3323236²).

The spelling of 225385663504 in words is "two hundred twenty-five billion, three hundred eighty-five million, six hundred sixty-three thousand, five hundred four".