243350021425 has 12 divisors (see below), whose sum is σ = 344861744896. Its totient is φ = 166868586000.

The previous prime is 243350021377. The next prime is 243350021443. The reversal of 243350021425 is 524120053342.

It is not a de Polignac number, because 243350021425 - 2⁹ = 243350020913 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 695285601 + ... + 695285950.

Almost surely, 2^243350021425 is an apocalyptic number.

243350021425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243350021425 is a deficient number, since it is larger than the sum of its proper divisors (101511723471).

243350021425 is a wasteful number, since it uses less digits than its factorization.

243350021425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390571568 (or 1390571563 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 243350021425 its reverse (524120053342), we get a palindrome (767470074767).

The spelling of 243350021425 in words is "two hundred forty-three billion, three hundred fifty million, twenty-one thousand, four hundred twenty-five".