25918259039 has 2 divisors, whose sum is σ = 25918259040. Its totient is φ = 25918259038.

The previous prime is 25918259033. The next prime is 25918259047. The reversal of 25918259039 is 93095281952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25918259039 - 2³² = 21623291743 is a prime.

It is a super-2 number, since 2×25918259039² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25918259033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12959129519 + 12959129520.

It is an arithmetic number, because the mean of its divisors is an integer number (12959129520).

Almost surely, 2^25918259039 is an apocalyptic number.

25918259039 is a deficient number, since it is larger than the sum of its proper divisors (1).

25918259039 is an equidigital number, since it uses as much as digits as its factorization.

25918259039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 53.

The spelling of 25918259039 in words is "twenty-five billion, nine hundred eighteen million, two hundred fifty-nine thousand, thirty-nine".