243155054525 has 12 divisors (see below), whose sum is σ = 302806318932. Its totient is φ = 193689171840.

The previous prime is 243155054509. The next prime is 243155054533. The reversal of 243155054525 is 525450551342.

It can be written as a sum of positive squares in 6 ways, for example, as 891261316 + 242263793209 = 29854^2 + 492203^2 .

It is not a de Polignac number, because 243155054525 - 2⁴ = 243155054509 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 20865854 + ... + 20877503.

It is an arithmetic number, because the mean of its divisors is an integer number (25233859911).

Almost surely, 2^243155054525 is an apocalyptic number.

243155054525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243155054525 is a deficient number, since it is larger than the sum of its proper divisors (59651264407).

243155054525 is a wasteful number, since it uses less digits than its factorization.

243155054525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41743600 (or 41743595 counting only the distinct ones).

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

The spelling of 243155054525 in words is "two hundred forty-three billion, one hundred fifty-five million, fifty-four thousand, five hundred twenty-five".