25840007 has 2 divisors, whose sum is σ = 25840008. Its totient is φ = 25840006.

The previous prime is 25839967. The next prime is 25840021. The reversal of 25840007 is 70004852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25840007 - 2¹² = 25835911 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25840207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12920003 + 12920004.

It is an arithmetic number, because the mean of its divisors is an integer number (12920004).

Almost surely, 2^25840007 is an apocalyptic number.

25840007 is a deficient number, since it is larger than the sum of its proper divisors (1).

25840007 is an equidigital number, since it uses as much as digits as its factorization.

25840007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 25840007 is about 5083.3066993838. The cubic root of 25840007 is about 295.6406912097.

Adding to 25840007 its reverse (70004852), we get a palindrome (95844859).

The spelling of 25840007 in words is "twenty-five million, eight hundred forty thousand, seven".