243118925 has 12 divisors (see below), whose sum is σ = 344534496. Its totient is φ = 166710000.

The previous prime is 243118907. The next prime is 243118933. The reversal of 243118925 is 529811342.

It is not a de Polignac number, because 243118925 - 2⁸ = 243118669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 694451 + ... + 694800.

It is an arithmetic number, because the mean of its divisors is an integer number (28711208).

Almost surely, 2^243118925 is an apocalyptic number.

243118925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243118925 is a deficient number, since it is larger than the sum of its proper divisors (101415571).

243118925 is a wasteful number, since it uses less digits than its factorization.

243118925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389268 (or 1389263 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 243118925 is about 15592.2713226778. The cubic root of 243118925 is about 624.1269303001.

The spelling of 243118925 in words is "two hundred forty-three million, one hundred eighteen thousand, nine hundred twenty-five".