243034561425 has 48 divisors (see below), whose sum is σ = 404490360960. Its totient is φ = 128757143040.

The previous prime is 243034561421. The next prime is 243034561477. The reversal of 243034561425 is 524165430342.

It is not a de Polignac number, because 243034561425 - 2² = 243034561421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243034561421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21950791 + ... + 21961859.

It is an arithmetic number, because the mean of its divisors is an integer number (8426882520).

Almost surely, 2^243034561425 is an apocalyptic number.

243034561425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243034561425 is a deficient number, since it is larger than the sum of its proper divisors (161455799535).

243034561425 is a wasteful number, since it uses less digits than its factorization.

243034561425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13002 (or 12997 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 243034561425 its reverse (524165430342), we get a palindrome (767199991767).

The spelling of 243034561425 in words is "two hundred forty-three billion, thirty-four million, five hundred sixty-one thousand, four hundred twenty-five".