243214321453225 has 12 divisors (see below), whose sum is σ = 301702066340956. Its totient is φ = 194496419911680.

The previous prime is 243214321453199. The next prime is 243214321453241. The reversal of 243214321453225 is 522354123412342.

It can be written as a sum of positive squares in 6 ways, for example, as 28842087653289 + 214372233799936 = 5370483^2 + 14641456^2 .

It is not a de Polignac number, because 243214321453225 - 2¹³ = 243214321445033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1875865152 + ... + 1875994801.

Almost surely, 2^{243214321453225} is an apocalyptic number.

243214321453225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243214321453225 is a deficient number, since it is larger than the sum of its proper divisors (58487744887731).

243214321453225 is a wasteful number, since it uses less digits than its factorization.

243214321453225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3751862556 (or 3751862551 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 43.

Adding to 243214321453225 its reverse (522354123412342), we get a palindrome (765568444865567).

The spelling of 243214321453225 in words is "two hundred forty-three trillion, two hundred fourteen billion, three hundred twenty-one million, four hundred fifty-three thousand, two hundred twenty-five".