225685854 has 48 divisors (see below), whose sum is σ = 499880160. Its totient is φ = 73570560.

The previous prime is 225685849. The next prime is 225685861. The reversal of 225685854 is 458586522.

It is a happy number.

225685854 is a `hidden beast` number, since 2 + 2 + 5 + 68 + 585 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 174442 + ... + 175730.

It is an arithmetic number, because the mean of its divisors is an integer number (10414170).

Almost surely, 2^225685854 is an apocalyptic number.

225685854 is an abundant number, since it is smaller than the sum of its proper divisors (274194306).

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

225685854 is a wasteful number, since it uses less digits than its factorization.

225685854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505 (or 1502 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The square root of 225685854 is about 15022.8444044395. The cubic root of 225685854 is about 608.8375730611.

The spelling of 225685854 in words is "two hundred twenty-five million, six hundred eighty-five thousand, eight hundred fifty-four".