1028925685 has 16 divisors (see below), whose sum is σ = 1252298880. Its totient is φ = 811458880.

The previous prime is 1028925673. The next prime is 1028925701. The reversal of 1028925685 is 5865298201.

It is not a de Polignac number, because 1028925685 - 2¹⁹ = 1028401397 is a prime.

It is a congruent number.

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, 208800 + ... + 213670.

It is an arithmetic number, because the mean of its divisors is an integer number (78268680).

Almost surely, 2^1028925685 is an apocalyptic number.

It is an amenable number.

1028925685 is a deficient number, since it is larger than the sum of its proper divisors (223373195).

1028925685 is an equidigital number, since it uses as much as digits as its factorization.

1028925685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 1028925685 is about 32076.8714964536. The cubic root of 1028925685 is about 1009.5503945991.

The spelling of 1028925685 in words is "one billion, twenty-eight million, nine hundred twenty-five thousand, six hundred eighty-five".