1028425 has 12 divisors (see below), whose sum is σ = 1317376. Its totient is φ = 795600.

The previous prime is 1028411. The next prime is 1028437. The reversal of 1028425 is 5248201.

It is not a de Polignac number, because 1028425 - 2⁵ = 1028393 is a prime.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

1028425 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1028396 and 1028405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112 + ... + 1438.

2^1028425 is an apocalyptic number.

It is an amenable number.

1028425 is a deficient number, since it is larger than the sum of its proper divisors (288951).

1028425 is a wasteful number, since it uses less digits than its factorization.

1028425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368 (or 1363 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1028425 is about 1014.1129128455. The cubic root of 1028425 is about 100.9386615764.

The spelling of 1028425 in words is "one million, twenty-eight thousand, four hundred twenty-five".