25021140430243 has 4 divisors (see below), whose sum is σ = 25025221522728. Its totient is φ = 25017059337760.

The previous prime is 25021140430241. The next prime is 25021140430301. The reversal of 25021140430243 is 34203404112052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25021140430243 - 2¹ = 25021140430241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25021140430241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2040537046 + ... + 2040549307.

It is an arithmetic number, because the mean of its divisors is an integer number (6256305380682).

Almost surely, 2^{25021140430243} is an apocalyptic number.

25021140430243 is a deficient number, since it is larger than the sum of its proper divisors (4081092485).

25021140430243 is an equidigital number, since it uses as much as digits as its factorization.

25021140430243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081092484.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 25021140430243 its reverse (34203404112052), we get a palindrome (59224544542295).

The spelling of 25021140430243 in words is "twenty-five trillion, twenty-one billion, one hundred forty million, four hundred thirty thousand, two hundred forty-three".