25513055763 has 40 divisors (see below), whose sum is σ = 37093555968. Its totient is φ = 15597575136.

The previous prime is 25513055761. The next prime is 25513055801. The reversal of 25513055763 is 36755031552.

It is a happy number.

It is not a de Polignac number, because 25513055763 - 2¹ = 25513055761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25513055761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14308170 + ... + 14309952.

Almost surely, 2^25513055763 is an apocalyptic number.

25513055763 is a deficient number, since it is larger than the sum of its proper divisors (11580500205).

25513055763 is an equidigital number, since it uses as much as digits as its factorization.

25513055763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005 (or 1966 counting only the distinct ones).

The product of its (nonzero) digits is 472500, while the sum is 42.

The spelling of 25513055763 in words is "twenty-five billion, five hundred thirteen million, fifty-five thousand, seven hundred sixty-three".