25131021115323 has 8 divisors (see below), whose sum is σ = 33508161376768. Its totient is φ = 16753947465384.

The previous prime is 25131021115313. The next prime is 25131021115349. The reversal of 25131021115323 is 32351112013152.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25131021115323 - 2⁶ = 25131021115259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25131021115313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15765811 + ... + 17286492.

It is an arithmetic number, because the mean of its divisors is an integer number (4188520172096).

Almost surely, 2^{25131021115323} is an apocalyptic number.

25131021115323 is a deficient number, since it is larger than the sum of its proper divisors (8377140261445).

25131021115323 is a wasteful number, since it uses less digits than its factorization.

25131021115323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33305753.

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 25131021115323 its reverse (32351112013152), we get a palindrome (57482133128475).

The spelling of 25131021115323 in words is "twenty-five trillion, one hundred thirty-one billion, twenty-one million, one hundred fifteen thousand, three hundred twenty-three".