25505287711 has 2 divisors, whose sum is σ = 25505287712. Its totient is φ = 25505287710.

The previous prime is 25505287693. The next prime is 25505287721. The reversal of 25505287711 is 11778250552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25505287711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25505287721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12752643855 + 12752643856.

It is an arithmetic number, because the mean of its divisors is an integer number (12752643856).

Almost surely, 2^25505287711 is an apocalyptic number.

25505287711 is a deficient number, since it is larger than the sum of its proper divisors (1).

25505287711 is an equidigital number, since it uses as much as digits as its factorization.

25505287711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196000, while the sum is 43.

The spelling of 25505287711 in words is "twenty-five billion, five hundred five million, two hundred eighty-seven thousand, seven hundred eleven".