1025816785 has 16 divisors (see below), whose sum is σ = 1412320896. Its totient is φ = 700674048.

The previous prime is 1025816773. The next prime is 1025816819. The reversal of 1025816785 is 5876185201.

1025816785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1025816785 - 2¹¹ = 1025814737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48027 + ... + 66016.

It is an arithmetic number, because the mean of its divisors is an integer number (88270056).

Almost surely, 2^1025816785 is an apocalyptic number.

It is an amenable number.

1025816785 is a deficient number, since it is larger than the sum of its proper divisors (386504111).

1025816785 is a wasteful number, since it uses less digits than its factorization.

1025816785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114312.

The product of its (nonzero) digits is 134400, while the sum is 43.

The square root of 1025816785 is about 32028.3746855815. The cubic root of 1025816785 is about 1008.5325829566.

The spelling of 1025816785 in words is "one billion, twenty-five million, eight hundred sixteen thousand, seven hundred eighty-five".