25604515067040 has 4608 divisors, whose sum is σ = 125004159221760. Its totient is φ = 4615136870400.

The previous prime is 25604515066961. The next prime is 25604515067077. The reversal of 25604515067040 is 4076051540652.

25604515067040 is a `hidden beast` number, since 2 + 5 + 60 + 4 + 515 + 0 + 6 + 70 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 767 ways as a sum of consecutive naturals, for example, 121348412535 + ... + 121348412745.

It is an arithmetic number, because the mean of its divisors is an integer number (27127638720).

Almost surely, 2^{25604515067040} is an apocalyptic number.

25604515067040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25604515067040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62502079610880).

25604515067040 is an abundant number, since it is smaller than the sum of its proper divisors (99399644154720).

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

25604515067040 is a wasteful number, since it uses less digits than its factorization.

25604515067040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 25604515067040 in words is "twenty-five trillion, six hundred four billion, five hundred fifteen million, sixty-seven thousand, forty".