243318425 has 12 divisors (see below), whose sum is σ = 344817216. Its totient is φ = 166846800.

The previous prime is 243318421. The next prime is 243318451. The reversal of 243318425 is 524813342.

243318425 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 243318425 - 2² = 243318421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 243318391 and 243318400.

It is not an unprimeable number, because it can be changed into a prime (243318421) 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, 695021 + ... + 695370.

It is an arithmetic number, because the mean of its divisors is an integer number (28734768).

Almost surely, 2^243318425 is an apocalyptic number.

243318425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243318425 is a deficient number, since it is larger than the sum of its proper divisors (101498791).

243318425 is a wasteful number, since it uses less digits than its factorization.

243318425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390408 (or 1390403 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 243318425 is about 15598.6674110323. The cubic root of 243318425 is about 624.2976002444.

The spelling of 243318425 in words is "two hundred forty-three million, three hundred eighteen thousand, four hundred twenty-five".