25917667 has 2 divisors, whose sum is σ = 25917668. Its totient is φ = 25917666.

The previous prime is 25917641. The next prime is 25917709. The reversal of 25917667 is 76671952.

25917667 is nontrivially palindromic in base 5.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25917667 - 2¹¹ = 25915619 is a prime.

It is not a weakly prime, because it can be changed into another prime (25917167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12958833 + 12958834.

It is an arithmetic number, because the mean of its divisors is an integer number (12958834).

Almost surely, 2^25917667 is an apocalyptic number.

25917667 is a deficient number, since it is larger than the sum of its proper divisors (1).

25917667 is an equidigital number, since it uses as much as digits as its factorization.

25917667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 43.

The square root of 25917667 is about 5090.9396971483. The cubic root of 25917667 is about 295.9365695286.

The spelling of 25917667 in words is "twenty-five million, nine hundred seventeen thousand, six hundred sixty-seven".