25638367 has 2 divisors, whose sum is σ = 25638368. Its totient is φ = 25638366.

The previous prime is 25638343. The next prime is 25638383. The reversal of 25638367 is 76383652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25638367 is a prime.

It is a Chen 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 (25638337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12819183 + 12819184.

It is an arithmetic number, because the mean of its divisors is an integer number (12819184).

Almost surely, 2^25638367 is an apocalyptic number.

25638367 is a deficient number, since it is larger than the sum of its proper divisors (1).

25638367 is an equidigital number, since it uses as much as digits as its factorization.

25638367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 40.

The square root of 25638367 is about 5063.4343088461. The cubic root of 25638367 is about 294.8696810197.

The spelling of 25638367 in words is "twenty-five million, six hundred thirty-eight thousand, three hundred sixty-seven".