243502137325 has 12 divisors (see below), whose sum is σ = 312354466740. Its totient is φ = 188084408960.

The previous prime is 243502137317. The next prime is 243502137349. The reversal of 243502137325 is 523731205342.

It can be written as a sum of positive squares in 6 ways, for example, as 7821987364 + 235680149961 = 88442^2 + 485469^2 .

It is not a de Polignac number, because 243502137325 - 2³ = 243502137317 is a prime.

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, 167931784 + ... + 167933233.

It is an arithmetic number, because the mean of its divisors is an integer number (26029538895).

Almost surely, 2^243502137325 is an apocalyptic number.

243502137325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243502137325 is a deficient number, since it is larger than the sum of its proper divisors (68852329415).

243502137325 is a wasteful number, since it uses less digits than its factorization.

243502137325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335865056 (or 335865051 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 37.

The spelling of 243502137325 in words is "two hundred forty-three billion, five hundred two million, one hundred thirty-seven thousand, three hundred twenty-five".