243134342525 has 24 divisors (see below), whose sum is σ = 310045986144. Its totient is φ = 189053883200.

The previous prime is 243134342509. The next prime is 243134342531. The reversal of 243134342525 is 525243431342.

It is not a de Polignac number, because 243134342525 - 2⁴ = 243134342509 is a prime.

It is a super-2 number, since 2×243134342525² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 715691 + ... + 999240.

It is an arithmetic number, because the mean of its divisors is an integer number (12918582756).

Almost surely, 2^243134342525 is an apocalyptic number.

243134342525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243134342525 is a deficient number, since it is larger than the sum of its proper divisors (66911643619).

243134342525 is a wasteful number, since it uses less digits than its factorization.

243134342525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715101 (or 1715096 counting only the distinct ones).

The product of its digits is 345600, while the sum is 38.

Adding to 243134342525 its reverse (525243431342), we get a palindrome (768377773867).

The spelling of 243134342525 in words is "two hundred forty-three billion, one hundred thirty-four million, three hundred forty-two thousand, five hundred twenty-five".