1028677825 has 36 divisors (see below), whose sum is σ = 1487312172. Its totient is φ = 703718400.

The previous prime is 1028677817. The next prime is 1028677883. The reversal of 1028677825 is 5287768201.

It can be written as a sum of positive squares in 6 ways, for example, as 356416641 + 672261184 = 18879^2 + 25928^2 .

It is not a de Polignac number, because 1028677825 - 2³ = 1028677817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 755145 + ... + 756505.

It is an arithmetic number, because the mean of its divisors is an integer number (41314227).

Almost surely, 2^1028677825 is an apocalyptic number.

It is an amenable number.

1028677825 is a deficient number, since it is larger than the sum of its proper divisors (458634347).

1028677825 is a wasteful number, since it uses less digits than its factorization.

1028677825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 1028677825 is about 32073.0077323596. The cubic root of 1028677825 is about 1009.4693238733.

The spelling of 1028677825 in words is "one billion, twenty-eight million, six hundred seventy-seven thousand, eight hundred twenty-five".