25678567 has 2 divisors, whose sum is σ = 25678568. Its totient is φ = 25678566.

The previous prime is 25678561. The next prime is 25678573. The reversal of 25678567 is 76587652.

It is a balanced prime because it is at equal distance from previous prime (25678561) and next prime (25678573).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25678567 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25678561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12839283 + 12839284.

It is an arithmetic number, because the mean of its divisors is an integer number (12839284).

Almost surely, 2^25678567 is an apocalyptic number.

25678567 is a deficient number, since it is larger than the sum of its proper divisors (1).

25678567 is an equidigital number, since it uses as much as digits as its factorization.

25678567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 46.

The square root of 25678567 is about 5067.4023917585. The cubic root of 25678567 is about 295.0237154160.

The spelling of 25678567 in words is "twenty-five million, six hundred seventy-eight thousand, five hundred sixty-seven".