25778015628720 has 160 divisors (see below), whose sum is σ = 80308538591232. Its totient is φ = 6840043094016.

The previous prime is 25778015628713. The next prime is 25778015628731. The reversal of 25778015628720 is 2782651087752.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112973787 + ... + 113201733.

Almost surely, 2^{25778015628720} is an apocalyptic number.

25778015628720 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 25778015628720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40154269295616).

25778015628720 is an abundant number, since it is smaller than the sum of its proper divisors (54530522962512).

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

25778015628720 is a wasteful number, since it uses less digits than its factorization.

25778015628720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230299 (or 230293 counting only the distinct ones).

The product of its (nonzero) digits is 26342400, while the sum is 60.

The spelling of 25778015628720 in words is "twenty-five trillion, seven hundred seventy-eight billion, fifteen million, six hundred twenty-eight thousand, seven hundred twenty".