243550025 has 24 divisors (see below), whose sum is σ = 309876000. Its totient is φ = 189826560.

The previous prime is 243550019. The next prime is 243550031. The reversal of 243550025 is 520055342.

It is an interprime number because it is at equal distance from previous prime (243550019) and next prime (243550031).

It is not a de Polignac number, because 243550025 - 2¹⁸ = 243287881 is a prime.

It is a super-3 number, since 3×243550025³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 243549976 and 243550003.

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, 161726 + ... + 163224.

It is an arithmetic number, because the mean of its divisors is an integer number (12911500).

Almost surely, 2^243550025 is an apocalyptic number.

243550025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243550025 is a deficient number, since it is larger than the sum of its proper divisors (66325975).

243550025 is a wasteful number, since it uses less digits than its factorization.

243550025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673 (or 1668 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 243550025 is about 15606.0893564019. The cubic root of 243550025 is about 624.4956143951.

The spelling of 243550025 in words is "two hundred forty-three million, five hundred fifty thousand, twenty-five".