25326080640 has 192 divisors, whose sum is σ = 99947727360. Its totient is φ = 5788809216.

The previous prime is 25326080639. The next prime is 25326080651. The reversal of 25326080640 is 4608062352.

25326080640 is a `hidden beast` number, since 2 + 5 + 3 + 2 + 6 + 0 + 8 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 25326080595 and 25326080604.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 273744 + ... + 354383.

It is an arithmetic number, because the mean of its divisors is an integer number (520561080).

Almost surely, 2^25326080640 is an apocalyptic number.

25326080640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25326080640 is an abundant number, since it is smaller than the sum of its proper divisors (74621646720).

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

25326080640 is a wasteful number, since it uses less digits than its factorization.

25326080640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628159 (or 628144 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 25326080640 in words is "twenty-five billion, three hundred twenty-six million, eighty thousand, six hundred forty".