243231425 has 24 divisors (see below), whose sum is σ = 312718080. Its totient is φ = 187473600.

The previous prime is 243231413. The next prime is 243231449. The reversal of 243231425 is 524132342.

It is not a de Polignac number, because 243231425 - 2⁴ = 243231409 is a prime.

It is a super-2 number, since 2×243231425² = 118323052215061250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243231394 and 243231403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218771 + ... + 219879.

It is an arithmetic number, because the mean of its divisors is an integer number (13029920).

Almost surely, 2^243231425 is an apocalyptic number.

243231425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243231425 is a deficient number, since it is larger than the sum of its proper divisors (69486655).

243231425 is a wasteful number, since it uses less digits than its factorization.

243231425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433 (or 1428 counting only the distinct ones).

The product of its digits is 5760, while the sum is 26.

The square root of 243231425 is about 15595.8784619527. The cubic root of 243231425 is about 624.2231842249.

Adding to 243231425 its reverse (524132342), we get a palindrome (767363767).

The spelling of 243231425 in words is "two hundred forty-three million, two hundred thirty-one thousand, four hundred twenty-five".