243402325 has 12 divisors (see below), whose sum is σ = 302684868. Its totient is φ = 194163200.

The previous prime is 243402301. The next prime is 243402347. The reversal of 243402325 is 523204342.

It can be written as a sum of positive squares in 6 ways, for example, as 7257636 + 236144689 = 2694^2 + 15367^2 .

It is not a de Polignac number, because 243402325 - 2¹³ = 243394133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243402325.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4966 + ... + 22615.

It is an arithmetic number, because the mean of its divisors is an integer number (25223739).

Almost surely, 2^243402325 is an apocalyptic number.

243402325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243402325 is a deficient number, since it is larger than the sum of its proper divisors (59282543).

243402325 is a wasteful number, since it uses less digits than its factorization.

243402325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27944 (or 27939 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 243402325 is about 15601.3565115345. The cubic root of 243402325 is about 624.3693478586.

Adding to 243402325 its reverse (523204342), we get a palindrome (766606667).

The spelling of 243402325 in words is "two hundred forty-three million, four hundred two thousand, three hundred twenty-five".