243155055425 has 12 divisors (see below), whose sum is σ = 304278439740. Its totient is φ = 192739417920.

The previous prime is 243155055419. The next prime is 243155055487. The reversal of 243155055425 is 524550551342.

243155055425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 17523405376 + 225631650049 = 132376^2 + 475007^2 .

It is a de Polignac number, because none of the positive numbers 2^k-243155055425 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44612882 + ... + 44618331.

It is an arithmetic number, because the mean of its divisors is an integer number (25356536645).

Almost surely, 2^243155055425 is an apocalyptic number.

243155055425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243155055425 is a deficient number, since it is larger than the sum of its proper divisors (61123384315).

243155055425 is a wasteful number, since it uses less digits than its factorization.

243155055425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89231332 (or 89231327 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 41.

The spelling of 243155055425 in words is "two hundred forty-three billion, one hundred fifty-five million, fifty-five thousand, four hundred twenty-five".