25726522667 has 2 divisors, whose sum is σ = 25726522668. Its totient is φ = 25726522666.

The previous prime is 25726522643. The next prime is 25726522693. The reversal of 25726522667 is 76622562752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25726522667 - 2³² = 21431555371 is a prime.

It is not a weakly prime, because it can be changed into another prime (25726522697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12863261333 + 12863261334.

It is an arithmetic number, because the mean of its divisors is an integer number (12863261334).

Almost surely, 2^25726522667 is an apocalyptic number.

25726522667 is a deficient number, since it is larger than the sum of its proper divisors (1).

25726522667 is an equidigital number, since it uses as much as digits as its factorization.

25726522667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 50.

The spelling of 25726522667 in words is "twenty-five billion, seven hundred twenty-six million, five hundred twenty-two thousand, six hundred sixty-seven".