25765386253 has 2 divisors, whose sum is σ = 25765386254. Its totient is φ = 25765386252.

The previous prime is 25765386233. The next prime is 25765386263. The reversal of 25765386253 is 35268356752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21928574889 + 3836811364 = 148083^2 + 61942^2 .

It is a cyclic number.

It is not a de Polignac number, because 25765386253 - 2³³ = 17175451661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25765386253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25765386233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12882693126 + 12882693127.

It is an arithmetic number, because the mean of its divisors is an integer number (12882693127).

Almost surely, 2^25765386253 is an apocalyptic number.

It is an amenable number.

25765386253 is a deficient number, since it is larger than the sum of its proper divisors (1).

25765386253 is an equidigital number, since it uses as much as digits as its factorization.

25765386253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072000, while the sum is 52.

The spelling of 25765386253 in words is "twenty-five billion, seven hundred sixty-five million, three hundred eighty-six thousand, two hundred fifty-three".