243212725 has 48 divisors (see below), whose sum is σ = 356227200. Its totient is φ = 164640000.

The previous prime is 243212689. The next prime is 243212731. The reversal of 243212725 is 527212342.

It is not a de Polignac number, because 243212725 - 2⁹ = 243212213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243212693 and 243212702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 968850 + ... + 969100.

It is an arithmetic number, because the mean of its divisors is an integer number (7421400).

Almost surely, 2^243212725 is an apocalyptic number.

243212725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243212725 is a deficient number, since it is larger than the sum of its proper divisors (113014475).

243212725 is a wasteful number, since it uses less digits than its factorization.

243212725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 376 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 243212725 is about 15595.2789330618. The cubic root of 243212725 is about 624.2071867407.

The spelling of 243212725 in words is "two hundred forty-three million, two hundred twelve thousand, seven hundred twenty-five".