25305102311231 has 4 divisors (see below), whose sum is σ = 25311408097032. Its totient is φ = 25298796525432.

The previous prime is 25305102311221. The next prime is 25305102311239. The reversal of 25305102311231 is 13211320150352.

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 25305102311231 - 2¹⁴ = 25305102294847 is a prime.

It is a super-2 number, since 2×25305102311231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25305102311194 and 25305102311203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25305102311239) 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, 3152886881 + ... + 3152894906.

It is an arithmetic number, because the mean of its divisors is an integer number (6327852024258).

Almost surely, 2^{25305102311231} is an apocalyptic number.

25305102311231 is a deficient number, since it is larger than the sum of its proper divisors (6305785801).

25305102311231 is an equidigital number, since it uses as much as digits as its factorization.

25305102311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305785800.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 25305102311231 its reverse (13211320150352), we get a palindrome (38516422461583).

The spelling of 25305102311231 in words is "twenty-five trillion, three hundred five billion, one hundred two million, three hundred eleven thousand, two hundred thirty-one".