1025656878384 has 480 divisors, whose sum is σ = 3217496567040. Its totient is φ = 311731200000.

The previous prime is 1025656878371. The next prime is 1025656878391. The reversal of 1025656878384 is 4838786565201.

1025656878384 is a `hidden beast` number, since 1 + 0 + 2 + 565 + 68 + 7 + 8 + 3 + 8 + 4 = 666.

It is a super-2 number, since 2×1025656878384² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3098661099 + ... + 3098661429.

It is an arithmetic number, because the mean of its divisors is an integer number (6703117848).

Almost surely, 2^{1025656878384} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025656878384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1608748283520).

1025656878384 is an abundant number, since it is smaller than the sum of its proper divisors (2191839688656).

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

1025656878384 is a wasteful number, since it uses less digits than its factorization.

1025656878384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 63.

The spelling of 1025656878384 in words is "one trillion, twenty-five billion, six hundred fifty-six million, eight hundred seventy-eight thousand, three hundred eighty-four".