243955525 has 24 divisors (see below), whose sum is σ = 349424064. Its totient is φ = 166982400.

The previous prime is 243955519. The next prime is 243955571. The reversal of 243955525 is 525559342.

It is not a de Polignac number, because 243955525 - 2²³ = 235566917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21417 + ... + 30766.

It is an arithmetic number, because the mean of its divisors is an integer number (14559336).

Almost surely, 2^243955525 is an apocalyptic number.

243955525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243955525 is a deficient number, since it is larger than the sum of its proper divisors (105468539).

243955525 is a wasteful number, since it uses less digits than its factorization.

243955525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52221 (or 52216 counting only the distinct ones).

The product of its digits is 270000, while the sum is 40.

The square root of 243955525 is about 15619.0756768767. The cubic root of 243955525 is about 624.8420080650.

The spelling of 243955525 in words is "two hundred forty-three million, nine hundred fifty-five thousand, five hundred twenty-five".