243817425 has 24 divisors (see below), whose sum is σ = 447902880. Its totient is φ = 130035600.

The previous prime is 243817403. The next prime is 243817429. The reversal of 243817425 is 524718342.

It is a happy number.

243817425 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 243817425 - 2¹² = 243813329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243817425.

It is not an unprimeable number, because it can be changed into a prime (243817429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179931 + ... + 181280.

It is an arithmetic number, because the mean of its divisors is an integer number (18662620).

Almost surely, 2^243817425 is an apocalyptic number.

243817425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243817425 is a deficient number, since it is larger than the sum of its proper divisors (204085455).

243817425 is a wasteful number, since it uses less digits than its factorization.

243817425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361230 (or 361219 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 243817425 is about 15614.6541748449. The cubic root of 243817425 is about 624.7240808744.

The spelling of 243817425 in words is "two hundred forty-three million, eight hundred seventeen thousand, four hundred twenty-five".