1028579525 has 6 divisors (see below), whose sum is σ = 1275438642. Its totient is φ = 822863600.

The previous prime is 1028579507. The next prime is 1028579549. The reversal of 1028579525 is 5259758201.

It can be written as a sum of positive squares in 3 ways, for example, as 14730244 + 1013849281 = 3838^2 + 31841^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1028579525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20571566 + ... + 20571615.

It is an arithmetic number, because the mean of its divisors is an integer number (212573107).

Almost surely, 2^1028579525 is an apocalyptic number.

It is an amenable number.

1028579525 is a deficient number, since it is larger than the sum of its proper divisors (246859117).

1028579525 is an equidigital number, since it uses as much as digits as its factorization.

1028579525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41143191 (or 41143186 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 44.

The square root of 1028579525 is about 32071.4752544999. The cubic root of 1028579525 is about 1009.4371680343.

The spelling of 1028579525 in words is "one billion, twenty-eight million, five hundred seventy-nine thousand, five hundred twenty-five".