25840898938 has 16 divisors (see below), whose sum is σ = 39906331560. Its totient is φ = 12540496896.

The previous prime is 25840898929. The next prime is 25840898959. The reversal of 25840898938 is 83989804852.

It can be written as a sum of positive squares in 4 ways, for example, as 25738747489 + 102151449 = 160433^2 + 10107^2 .

It is a super-3 number, since 3×25840898938³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25840898938.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 396631 + ... + 457162.

Almost surely, 2^25840898938 is an apocalyptic number.

25840898938 is a deficient number, since it is larger than the sum of its proper divisors (14065432622).

25840898938 is a wasteful number, since it uses less digits than its factorization.

25840898938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854241.

The product of its (nonzero) digits is 39813120, while the sum is 64.

The spelling of 25840898938 in words is "twenty-five billion, eight hundred forty million, eight hundred ninety-eight thousand, nine hundred thirty-eight".