25953143317 has 2 divisors, whose sum is σ = 25953143318. Its totient is φ = 25953143316.

The previous prime is 25953143263. The next prime is 25953143353. The reversal of 25953143317 is 71334135952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16141448401 + 9811694916 = 127049^2 + 99054^2 .

It is a cyclic number.

It is not a de Polignac number, because 25953143317 - 2¹⁵ = 25953110549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25953143357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12976571658 + 12976571659.

It is an arithmetic number, because the mean of its divisors is an integer number (12976571659).

Almost surely, 2^25953143317 is an apocalyptic number.

It is an amenable number.

25953143317 is a deficient number, since it is larger than the sum of its proper divisors (1).

25953143317 is an equidigital number, since it uses as much as digits as its factorization.

25953143317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 43.

The spelling of 25953143317 in words is "twenty-five billion, nine hundred fifty-three million, one hundred forty-three thousand, three hundred seventeen".