25340194908 has 36 divisors (see below), whose sum is σ = 73205008240. Its totient is φ = 7240055616.

The previous prime is 25340194879. The next prime is 25340194909. The reversal of 25340194908 is 80949104352.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25340194909) 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 11 ways as a sum of consecutive naturals, for example, 50277913 + ... + 50278416.

Almost surely, 2^25340194908 is an apocalyptic number.

25340194908 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25340194908 is an abundant number, since it is smaller than the sum of its proper divisors (47864813332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25340194908 is a wasteful number, since it uses less digits than its factorization.

25340194908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100556346 (or 100556341 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 25340194908 in words is "twenty-five billion, three hundred forty million, one hundred ninety-four thousand, nine hundred eight".