243608625 has 48 divisors (see below), whose sum is σ = 472953936. Its totient is φ = 119923200.

The previous prime is 243608621. The next prime is 243608647. The reversal of 243608625 is 526806342.

243608625 is a `hidden beast` number, since 2 + 43 + 608 + 6 + 2 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 44036496 + 199572129 = 6636^2 + 14127^2 .

It is not a de Polignac number, because 243608625 - 2² = 243608621 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 243608625.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243608621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6297 + ... + 22953.

It is an arithmetic number, because the mean of its divisors is an integer number (9853207).

Almost surely, 2^243608625 is an apocalyptic number.

243608625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243608625 is a deficient number, since it is larger than the sum of its proper divisors (229345311).

243608625 is a wasteful number, since it uses less digits than its factorization.

243608625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16691 (or 16678 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 243608625 is about 15607.9667157513. The cubic root of 243608625 is about 624.5456965200.

The spelling of 243608625 in words is "two hundred forty-three million, six hundred eight thousand, six hundred twenty-five".