243155055525 has 12 divisors (see below), whose sum is σ = 402016358592.
Its totient is φ = 129682696240.
The previous prime is 243155055487. The next prime is 243155055529. The reversal of 243155055525 is 525550551342.
It is not a de Polignac number, because 243155055525 - 212 = 243155051429 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (243155055529) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1621033629 + ... + 1621033778.
It is an arithmetic number, because the mean of its divisors is an integer number (33501363216).
Almost surely, 2243155055525 is an apocalyptic number.
243155055525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
It is an amenable number.
243155055525 is a deficient number, since it is larger than the sum of its proper divisors (158861303067).
243155055525 is a wasteful number, since it uses less digits than its factorization.
243155055525 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3242067420 (or 3242067415 counting only the distinct ones).
The product of its (nonzero) digits is 750000, while the sum is 42.
The spelling of 243155055525 in words is "two hundred forty-three billion, one hundred fifty-five million, fifty-five thousand, five hundred twenty-five".