25696584240 has 40 divisors (see below), whose sum is σ = 79659411888. Its totient is φ = 6852422400.

The previous prime is 25696584229. The next prime is 25696584241. The reversal of 25696584240 is 4248569652.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (25696584241) 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 7 ways as a sum of consecutive naturals, for example, 53534311 + ... + 53534790.

Almost surely, 2^25696584240 is an apocalyptic number.

25696584240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25696584240 is an abundant number, since it is smaller than the sum of its proper divisors (53962827648).

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

25696584240 is a wasteful number, since it uses less digits than its factorization.

25696584240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107069117 (or 107069111 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 51.

The spelling of 25696584240 in words is "twenty-five billion, six hundred ninety-six million, five hundred eighty-four thousand, two hundred forty".