25610855763853 has 2 divisors, whose sum is σ = 25610855763854. Its totient is φ = 25610855763852.

The previous prime is 25610855763809. The next prime is 25610855763881. The reversal of 25610855763853 is 35836755801652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23556627269289 + 2054228494564 = 4853517^2 + 1433258^2 .

It is a cyclic number.

It is not a de Polignac number, because 25610855763853 - 2²¹ = 25610853666701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25610855763803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12805427881926 + 12805427881927.

It is an arithmetic number, because the mean of its divisors is an integer number (12805427881927).

Almost surely, 2^{25610855763853} is an apocalyptic number.

It is an amenable number.

25610855763853 is a deficient number, since it is larger than the sum of its proper divisors (1).

25610855763853 is an equidigital number, since it uses as much as digits as its factorization.

25610855763853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440000, while the sum is 64.

The spelling of 25610855763853 in words is "twenty-five trillion, six hundred ten billion, eight hundred fifty-five million, seven hundred sixty-three thousand, eight hundred fifty-three".