25503504451 has 2 divisors, whose sum is σ = 25503504452. Its totient is φ = 25503504450.

The previous prime is 25503504449. The next prime is 25503504491. The reversal of 25503504451 is 15440530552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25503504451 - 2¹ = 25503504449 is a prime.

It is a super-2 number, since 2×25503504451² (a number of 22 digits) contains 22 as substring.

Together with 25503504449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25503504491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12751752225 + 12751752226.

It is an arithmetic number, because the mean of its divisors is an integer number (12751752226).

Almost surely, 2^25503504451 is an apocalyptic number.

25503504451 is a deficient number, since it is larger than the sum of its proper divisors (1).

25503504451 is an equidigital number, since it uses as much as digits as its factorization.

25503504451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 25503504451 in words is "twenty-five billion, five hundred three million, five hundred four thousand, four hundred fifty-one".