1028806125 has 16 divisors (see below), whose sum is σ = 1711934016. Its totient is φ = 548696400.

The previous prime is 1028806063. The next prime is 1028806139. The reversal of 1028806125 is 5216088201.

It is not a de Polignac number, because 1028806125 - 2⁶ = 1028806061 is a prime.

It is a Curzon number.

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, 1371367 + ... + 1372116.

It is an arithmetic number, because the mean of its divisors is an integer number (106995876).

Almost surely, 2^1028806125 is an apocalyptic number.

1028806125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1028806125 is a deficient number, since it is larger than the sum of its proper divisors (683127891).

1028806125 is an equidigital number, since it uses as much as digits as its factorization.

1028806125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743501 (or 2743491 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 1028806125 is about 32075.0077942313. The cubic root of 1028806125 is about 1009.5112902133.

The spelling of 1028806125 in words is "one billion, twenty-eight million, eight hundred six thousand, one hundred twenty-five".