25761662567 has 2 divisors, whose sum is σ = 25761662568. Its totient is φ = 25761662566.

The previous prime is 25761662527. The next prime is 25761662573. The reversal of 25761662567 is 76526616752.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25761662567 - 2¹⁶ = 25761597031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25761662527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12880831283 + 12880831284.

It is an arithmetic number, because the mean of its divisors is an integer number (12880831284).

Almost surely, 2^25761662567 is an apocalyptic number.

25761662567 is a deficient number, since it is larger than the sum of its proper divisors (1).

25761662567 is an equidigital number, since it uses as much as digits as its factorization.

25761662567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6350400, while the sum is 53.

The spelling of 25761662567 in words is "twenty-five billion, seven hundred sixty-one million, six hundred sixty-two thousand, five hundred sixty-seven".