225623385 has 96 divisors (see below), whose sum is σ = 452874240. Its totient is φ = 102974976.

The previous prime is 225623383. The next prime is 225623389. The reversal of 225623385 is 583326522.

225623385 is a `hidden beast` number, since 2 + 25 + 623 + 3 + 8 + 5 = 666.

It is not a de Polignac number, because 225623385 - 2¹ = 225623383 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225623383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 588904 + ... + 589286.

It is an arithmetic number, because the mean of its divisors is an integer number (4717440).

Almost surely, 2^225623385 is an apocalyptic number.

It is an amenable number.

225623385 is an abundant number, since it is smaller than the sum of its proper divisors (227250855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225623385 is a wasteful number, since it uses less digits than its factorization.

225623385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 476 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 225623385 is about 15020.7651269834. The cubic root of 225623385 is about 608.7813932232.

The spelling of 225623385 in words is "two hundred twenty-five million, six hundred twenty-three thousand, three hundred eighty-five".