25490766713 has 2 divisors, whose sum is σ = 25490766714. Its totient is φ = 25490766712.

The previous prime is 25490766667. The next prime is 25490766727. The reversal of 25490766713 is 31766709452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19783266409 + 5707500304 = 140653^2 + 75548^2 .

It is a cyclic number.

It is not a de Polignac number, because 25490766713 - 2⁶ = 25490766649 is a prime.

It is not a weakly prime, because it can be changed into another prime (25490766793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12745383356 + 12745383357.

It is an arithmetic number, because the mean of its divisors is an integer number (12745383357).

Almost surely, 2^25490766713 is an apocalyptic number.

It is an amenable number.

25490766713 is a deficient number, since it is larger than the sum of its proper divisors (1).

25490766713 is an equidigital number, since it uses as much as digits as its factorization.

25490766713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 25490766713 in words is "twenty-five billion, four hundred ninety million, seven hundred sixty-six thousand, seven hundred thirteen".