243346636225 has 36 divisors (see below), whose sum is σ = 379057669312. Its totient is φ = 151696591200.

The previous prime is 243346636219. The next prime is 243346636229. The reversal of 243346636225 is 522636643342.

It is not a de Polignac number, because 243346636225 - 2³ = 243346636217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243346636229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5724909 + ... + 5767258.

Almost surely, 2^243346636225 is an apocalyptic number.

243346636225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243346636225 is a deficient number, since it is larger than the sum of its proper divisors (135711033087).

243346636225 is a wasteful number, since it uses less digits than its factorization.

243346636225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11492206 (or 11492190 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 46.

The spelling of 243346636225 in words is "two hundred forty-three billion, three hundred forty-six million, six hundred thirty-six thousand, two hundred twenty-five".