25313432243 has 32 divisors (see below), whose sum is σ = 28418040000. Its totient is φ = 22355435520.

The previous prime is 25313432189. The next prime is 25313432279. The reversal of 25313432243 is 34223431352.

It is not a de Polignac number, because 25313432243 - 2¹⁰ = 25313431219 is a prime.

It is a super-2 number, since 2×25313432243² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25313432843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14148593 + ... + 14150381.

It is an arithmetic number, because the mean of its divisors is an integer number (888063750).

Almost surely, 2^25313432243 is an apocalyptic number.

25313432243 is a deficient number, since it is larger than the sum of its proper divisors (3104607757).

25313432243 is a wasteful number, since it uses less digits than its factorization.

25313432243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135.

The product of its digits is 51840, while the sum is 32.

Adding to 25313432243 its reverse (34223431352), we get a palindrome (59536863595).

The spelling of 25313432243 in words is "twenty-five billion, three hundred thirteen million, four hundred thirty-two thousand, two hundred forty-three".