243322425 has 36 divisors (see below), whose sum is σ = 437246940. Its totient is φ = 129346560.

The previous prime is 243322399. The next prime is 243322427. The reversal of 243322425 is 524223342.

It is a happy number.

243322425 is a `hidden beast` number, since 2 + 433 + 224 + 2 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 12616704 + 230705721 = 3552^2 + 15189^2 .

It is not a de Polignac number, because 243322425 - 2⁶ = 243322361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243322427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 74221 + ... + 77429.

Almost surely, 2^243322425 is an apocalyptic number.

243322425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243322425 is a deficient number, since it is larger than the sum of its proper divisors (193924515).

243322425 is a wasteful number, since it uses less digits than its factorization.

243322425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3562 (or 3554 counting only the distinct ones).

The product of its digits is 11520, while the sum is 27.

The square root of 243322425 is about 15598.7956265860. The cubic root of 243322425 is about 624.3010212440.

Adding to 243322425 its reverse (524223342), we get a palindrome (767545767).

The spelling of 243322425 in words is "two hundred forty-three million, three hundred twenty-two thousand, four hundred twenty-five".