243245225455 has 16 divisors (see below), whose sum is σ = 302449101120. Its totient is φ = 187581382912.

The previous prime is 243245225449. The next prime is 243245225479. The reversal of 243245225455 is 554522542342.

It is a cyclic number.

It is not a de Polignac number, because 243245225455 - 2¹³ = 243245217263 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1269979 + ... + 1448908.

It is an arithmetic number, because the mean of its divisors is an integer number (18903068820).

Almost surely, 2^243245225455 is an apocalyptic number.

243245225455 is a deficient number, since it is larger than the sum of its proper divisors (59203875665).

243245225455 is a wasteful number, since it uses less digits than its factorization.

243245225455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719538.

The product of its digits is 1920000, while the sum is 43.

Adding to 243245225455 its reverse (554522542342), we get a palindrome (797767767797).

The spelling of 243245225455 in words is "two hundred forty-three billion, two hundred forty-five million, two hundred twenty-five thousand, four hundred fifty-five".