25767660757 has 2 divisors, whose sum is σ = 25767660758. Its totient is φ = 25767660756.

The previous prime is 25767660707. The next prime is 25767660769. The reversal of 25767660757 is 75706676752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18207184356 + 7560476401 = 134934^2 + 86951^2 .

It is a cyclic number.

It is not a de Polignac number, because 25767660757 - 2¹⁹ = 25767136469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25767660707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12883830378 + 12883830379.

It is an arithmetic number, because the mean of its divisors is an integer number (12883830379).

Almost surely, 2^25767660757 is an apocalyptic number.

It is an amenable number.

25767660757 is a deficient number, since it is larger than the sum of its proper divisors (1).

25767660757 is an equidigital number, since it uses as much as digits as its factorization.

25767660757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25930800, while the sum is 58.

The spelling of 25767660757 in words is "twenty-five billion, seven hundred sixty-seven million, six hundred sixty thousand, seven hundred fifty-seven".