25290427667 has 2 divisors, whose sum is σ = 25290427668. Its totient is φ = 25290427666.

The previous prime is 25290427661. The next prime is 25290427711. The reversal of 25290427667 is 76672409252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25290427667 - 2⁴ = 25290427651 is a prime.

It is not a weakly prime, because it can be changed into another prime (25290427661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12645213833 + 12645213834.

It is an arithmetic number, because the mean of its divisors is an integer number (12645213834).

Almost surely, 2^25290427667 is an apocalyptic number.

25290427667 is a deficient number, since it is larger than the sum of its proper divisors (1).

25290427667 is an equidigital number, since it uses as much as digits as its factorization.

25290427667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 25290427667 in words is "twenty-five billion, two hundred ninety million, four hundred twenty-seven thousand, six hundred sixty-seven".