25818956910133 has 2 divisors, whose sum is σ = 25818956910134. Its totient is φ = 25818956910132.

The previous prime is 25818956910073. The next prime is 25818956910239. The reversal of 25818956910133 is 33101965981852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24551400673969 + 1267556236164 = 4954937^2 + 1125858^2 .

It is a cyclic number.

It is not a de Polignac number, because 25818956910133 - 2⁹ = 25818956909621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25818956910433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12909478455066 + 12909478455067.

It is an arithmetic number, because the mean of its divisors is an integer number (12909478455067).

Almost surely, 2^{25818956910133} is an apocalyptic number.

It is an amenable number.

25818956910133 is a deficient number, since it is larger than the sum of its proper divisors (1).

25818956910133 is an equidigital number, since it uses as much as digits as its factorization.

25818956910133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13996800, while the sum is 61.

The spelling of 25818956910133 in words is "twenty-five trillion, eight hundred eighteen billion, nine hundred fifty-six million, nine hundred ten thousand, one hundred thirty-three".