243351540425 has 24 divisors (see below), whose sum is σ = 353275222272. Its totient is φ = 162799632000.

The previous prime is 243351540413. The next prime is 243351540433. The reversal of 243351540425 is 524045153342.

It is not a de Polignac number, because 243351540425 - 2¹⁴ = 243351524041 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16951121 + ... + 16965470.

It is an arithmetic number, because the mean of its divisors is an integer number (14719800928).

Almost surely, 2^243351540425 is an apocalyptic number.

243351540425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243351540425 is a deficient number, since it is larger than the sum of its proper divisors (109923681847).

243351540425 is a wasteful number, since it uses less digits than its factorization.

243351540425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33916649 (or 33916644 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 243351540425 its reverse (524045153342), we get a palindrome (767396693767).

The spelling of 243351540425 in words is "two hundred forty-three billion, three hundred fifty-one million, five hundred forty thousand, four hundred twenty-five".