25343445211243 has 16 divisors (see below), whose sum is σ = 26857718596800. Its totient is φ = 23831790022656.

The previous prime is 25343445211223. The next prime is 25343445211261. The reversal of 25343445211243 is 34211254434352.

It is a cyclic number.

It is not a de Polignac number, because 25343445211243 - 2¹⁷ = 25343445080171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25343445211243.

It is not an unprimeable number, because it can be changed into a prime (25343445211223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91172833 + ... + 91450381.

It is an arithmetic number, because the mean of its divisors is an integer number (1678607412300).

Almost surely, 2^{25343445211243} is an apocalyptic number.

25343445211243 is a deficient number, since it is larger than the sum of its proper divisors (1514273385557).

25343445211243 is a wasteful number, since it uses less digits than its factorization.

25343445211243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282246.

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

Adding to 25343445211243 its reverse (34211254434352), we get a palindrome (59554699645595).

The spelling of 25343445211243 in words is "twenty-five trillion, three hundred forty-three billion, four hundred forty-five million, two hundred eleven thousand, two hundred forty-three".