243203405125 has 16 divisors (see below), whose sum is σ = 303592536000. Its totient is φ = 194514848400.

The previous prime is 243203405117. The next prime is 243203405141. The reversal of 243203405125 is 521504302342.

It is not a de Polignac number, because 243203405125 - 2³ = 243203405117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275046 + ... + 749704.

It is an arithmetic number, because the mean of its divisors is an integer number (18974533500).

Almost surely, 2^243203405125 is an apocalyptic number.

243203405125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243203405125 is a deficient number, since it is larger than the sum of its proper divisors (60389130875).

243203405125 is an equidigital number, since it uses as much as digits as its factorization.

243203405125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478773 (or 478763 counting only the distinct ones).

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

Adding to 243203405125 its reverse (521504302342), we get a palindrome (764707707467).

The spelling of 243203405125 in words is "two hundred forty-three billion, two hundred three million, four hundred five thousand, one hundred twenty-five".