25803508069 has 16 divisors (see below), whose sum is σ = 26976013504. Its totient is φ = 24661324800.

The previous prime is 25803508057. The next prime is 25803508121. The reversal of 25803508069 is 96080530852.

It is a cyclic number.

It is not a de Polignac number, because 25803508069 - 2⁹ = 25803507557 is a prime.

It is a super-2 number, since 2×25803508069² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25803503069) 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 in 15 ways as a sum of consecutive naturals, for example, 480754 + ... + 531724.

It is an arithmetic number, because the mean of its divisors is an integer number (1686000844).

Almost surely, 2^25803508069 is an apocalyptic number.

It is an amenable number.

25803508069 is a deficient number, since it is larger than the sum of its proper divisors (1172505435).

25803508069 is a wasteful number, since it uses less digits than its factorization.

25803508069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51268.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 25803508069 in words is "twenty-five billion, eight hundred three million, five hundred eight thousand, sixty-nine".