243957025 has 24 divisors (see below), whose sum is σ = 332728704. Its totient is φ = 176308800.

The previous prime is 243957023. The next prime is 243957031. The reversal of 243957025 is 520759342.

243957025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243957025 - 2¹ = 243957023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243957023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7290 + ... + 23260.

It is an arithmetic number, because the mean of its divisors is an integer number (13863696).

Almost surely, 2^243957025 is an apocalyptic number.

243957025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243957025 is a deficient number, since it is larger than the sum of its proper divisors (88771679).

243957025 is a wasteful number, since it uses less digits than its factorization.

243957025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16041 (or 16036 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 243957025 is about 15619.1236950093. The cubic root of 243957025 is about 624.8432887098.

The spelling of 243957025 in words is "two hundred forty-three million, nine hundred fifty-seven thousand, twenty-five".