1025998785056 has 48 divisors (see below), whose sum is σ = 2308586757120. Its totient is φ = 439696719360.

The previous prime is 1025998785043. The next prime is 1025998785127. The reversal of 1025998785056 is 6505878995201.

It is a junction number, because it is equal to n+sod(n) for n = 1025998784983 and 1025998785001.

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 7 ways as a sum of consecutive naturals, for example, 6942785 + ... + 7089023.

It is an arithmetic number, because the mean of its divisors is an integer number (48095557440).

Almost surely, 2^{1025998785056} is an apocalyptic number.

1025998785056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1025998785056 is an abundant number, since it is smaller than the sum of its proper divisors (1282587972064).

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

1025998785056 is a wasteful number, since it uses less digits than its factorization.

1025998785056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177577 (or 177569 counting only the distinct ones).

The product of its (nonzero) digits is 54432000, while the sum is 65.

The spelling of 1025998785056 in words is "one trillion, twenty-five billion, nine hundred ninety-eight million, seven hundred eighty-five thousand, fifty-six".