243384825 has 12 divisors (see below), whose sum is σ = 402396368. Its totient is φ = 129805200.

The previous prime is 243384821. The next prime is 243384863. The reversal of 243384825 is 528483342.

243384825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243384825 - 2² = 243384821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243384821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1622491 + ... + 1622640.

Almost surely, 2^243384825 is an apocalyptic number.

243384825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243384825 is a deficient number, since it is larger than the sum of its proper divisors (159011543).

243384825 is a wasteful number, since it uses less digits than its factorization.

243384825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245144 (or 3245139 counting only the distinct ones).

The product of its digits is 184320, while the sum is 39.

The square root of 243384825 is about 15600.7956527864. The cubic root of 243384825 is about 624.3543839842.

The spelling of 243384825 in words is "two hundred forty-three million, three hundred eighty-four thousand, eight hundred twenty-five".