25831320353 has 2 divisors, whose sum is σ = 25831320354. Its totient is φ = 25831320352.

The previous prime is 25831320313. The next prime is 25831320407. The reversal of 25831320353 is 35302313852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15713374609 + 10117945744 = 125353^2 + 100588^2 .

It is a cyclic number.

It is not a de Polignac number, because 25831320353 - 2⁶ = 25831320289 is a prime.

It is a super-2 number, since 2×25831320353² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25831320313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12915660176 + 12915660177.

It is an arithmetic number, because the mean of its divisors is an integer number (12915660177).

Almost surely, 2^25831320353 is an apocalyptic number.

It is an amenable number.

25831320353 is a deficient number, since it is larger than the sum of its proper divisors (1).

25831320353 is an equidigital number, since it uses as much as digits as its factorization.

25831320353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 25831320353 in words is "twenty-five billion, eight hundred thirty-one million, three hundred twenty thousand, three hundred fifty-three".