25555505363 has 2 divisors, whose sum is σ = 25555505364. Its totient is φ = 25555505362.

The previous prime is 25555505347. The next prime is 25555505383. The reversal of 25555505363 is 36350555552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25555505363 - 2⁴ = 25555505347 is a prime.

It is not a weakly prime, because it can be changed into another prime (25555505383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12777752681 + 12777752682.

It is an arithmetic number, because the mean of its divisors is an integer number (12777752682).

Almost surely, 2^25555505363 is an apocalyptic number.

25555505363 is a deficient number, since it is larger than the sum of its proper divisors (1).

25555505363 is an equidigital number, since it uses as much as digits as its factorization.

25555505363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1687500, while the sum is 44.

The spelling of 25555505363 in words is "twenty-five billion, five hundred fifty-five million, five hundred five thousand, three hundred sixty-three".