1025617128 has 32 divisors (see below), whose sum is σ = 2565626400. Its totient is φ = 341661248.

The previous prime is 1025617111. The next prime is 1025617141. The reversal of 1025617128 is 8217165201.

1025617128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29263 + ... + 53921.

It is an arithmetic number, because the mean of its divisors is an integer number (80175825).

Almost surely, 2^1025617128 is an apocalyptic number.

It is an amenable number.

1025617128 is an abundant number, since it is smaller than the sum of its proper divisors (1540009272).

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

1025617128 is a wasteful number, since it uses less digits than its factorization.

1025617128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26401 (or 26397 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 1025617128 is about 32025.2576570431. The cubic root of 1025617128 is about 1008.4671477320.

The spelling of 1025617128 in words is "one billion, twenty-five million, six hundred seventeen thousand, one hundred twenty-eight".