243722625 has 32 divisors (see below), whose sum is σ = 429421824. Its totient is φ = 122336000.

The previous prime is 243722621. The next prime is 243722627. The reversal of 243722625 is 526227342.

It is not a de Polignac number, because 243722625 - 2² = 243722621 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243722621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12741 + ... + 25490.

It is an arithmetic number, because the mean of its divisors is an integer number (13419432).

Almost surely, 2^243722625 is an apocalyptic number.

243722625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243722625 is a deficient number, since it is larger than the sum of its proper divisors (185699199).

243722625 is a wasteful number, since it uses less digits than its factorization.

243722625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38266 (or 38256 counting only the distinct ones).

The product of its digits is 40320, while the sum is 33.

The square root of 243722625 is about 15611.6182697374. The cubic root of 243722625 is about 624.6431029046.

Adding to 243722625 its reverse (526227342), we get a palindrome (769949967).

The spelling of 243722625 in words is "two hundred forty-three million, seven hundred twenty-two thousand, six hundred twenty-five".