1025555404104 has 768 divisors, whose sum is σ = 3713568768000. Its totient is φ = 247665600000.

The previous prime is 1025555404099. The next prime is 1025555404147. The reversal of 1025555404104 is 4014045555201.

1025555404104 is a `hidden beast` number, since 1 + 0 + 2 + 5 + 5 + 5 + 540 + 4 + 104 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2088707299 + ... + 2088707789.

It is an arithmetic number, because the mean of its divisors is an integer number (4835376000).

Almost surely, 2^{1025555404104} is an apocalyptic number.

1025555404104 is a gapful number since it is divisible by the number (14) 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 1025555404104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1856784384000).

1025555404104 is an abundant number, since it is smaller than the sum of its proper divisors (2688013363896).

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

1025555404104 is a wasteful number, since it uses less digits than its factorization.

1025555404104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 1025555404104 in words is "one trillion, twenty-five billion, five hundred fifty-five million, four hundred four thousand, one hundred four".