225845388 has 48 divisors (see below), whose sum is σ = 605724000. Its totient is φ = 72684864.

The previous prime is 225845371. The next prime is 225845423. The reversal of 225845388 is 883548522.

225845388 is a `hidden beast` number, since 225 + 8 + 45 + 388 = 666.

It is a super-2 number, since 2×225845388² = 102012278561741088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32923 + ... + 39186.

It is an arithmetic number, because the mean of its divisors is an integer number (12619250).

Almost surely, 2^225845388 is an apocalyptic number.

It is an amenable number.

225845388 is an abundant number, since it is smaller than the sum of its proper divisors (379878612).

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

225845388 is a wasteful number, since it uses less digits than its factorization.

225845388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72151 (or 72143 counting only the distinct ones).

The product of its digits is 614400, while the sum is 45.

The square root of 225845388 is about 15028.1531799486. The cubic root of 225845388 is about 608.9809987034.

It can be divided in two parts, 22584 and 5388, that added together give a palindrome (27972).

The spelling of 225845388 in words is "two hundred twenty-five million, eight hundred forty-five thousand, three hundred eighty-eight".