25918259041 has 4 divisors (see below), whose sum is σ = 27442862532. Its totient is φ = 24393655552.

The previous prime is 25918259039. The next prime is 25918259047. The reversal of 25918259041 is 14095281952.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20483620641 + 5434638400 = 143121^2 + 73720^2 .

It is a cyclic number.

It is not a de Polignac number, because 25918259041 - 2¹ = 25918259039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25918258982 and 25918259000.

It is not an unprimeable number, because it can be changed into a prime (25918259047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762301720 + ... + 762301753.

It is an arithmetic number, because the mean of its divisors is an integer number (6860715633).

Almost surely, 2^25918259041 is an apocalyptic number.

It is an amenable number.

25918259041 is a deficient number, since it is larger than the sum of its proper divisors (1524603491).

25918259041 is a wasteful number, since it uses less digits than its factorization.

25918259041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524603490.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 25918259041 in words is "twenty-five billion, nine hundred eighteen million, two hundred fifty-nine thousand, forty-one".