243516025 has 9 divisors (see below), whose sum is σ = 302056653. Its totient is φ = 194750400.

The previous prime is 243515959. The next prime is 243516029. The reversal of 243516025 is 520615342.

The square root of 243516025 is 15605.

It is a perfect power (a square), and thus also a powerful number.

243516025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 149891049 + 93624976 = 12243^2 + 9676^2 .

It is not a de Polignac number, because 243516025 - 2⁷ = 243515897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243515984 and 243516002.

It is not an unprimeable number, because it can be changed into a prime (243516029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 76465 + ... + 79585.

Almost surely, 2^243516025 is an apocalyptic number.

243516025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

243516025 is the 15605-th square number.

243516025 is the 7803-rd centered octagonal number.

It is an amenable number.

243516025 is a deficient number, since it is larger than the sum of its proper divisors (58540628).

243516025 is an frugal number, since it uses more digits than its factorization.

243516025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6252 (or 3126 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The cubic root of 243516025 is about 624.4665528241.

The spelling of 243516025 in words is "two hundred forty-three million, five hundred sixteen thousand, twenty-five".