1025728912 has 20 divisors (see below), whose sum is σ = 2140223260. Its totient is φ = 473413248.

The previous prime is 1025728909. The next prime is 1025728943. The reversal of 1025728912 is 2198275201.

It can be written as a sum of positive squares in 2 ways, for example, as 71166096 + 954562816 = 8436^2 + 30896^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2465487 + ... + 2465902.

It is an arithmetic number, because the mean of its divisors is an integer number (107011163).

Almost surely, 2^1025728912 is an apocalyptic number.

It is an amenable number.

1025728912 is an abundant number, since it is smaller than the sum of its proper divisors (1114494348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025728912 is a wasteful number, since it uses less digits than its factorization.

1025728912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4931410 (or 4931404 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 1025728912 is about 32027.0028569643. The cubic root of 1025728912 is about 1008.5037846645.

The spelling of 1025728912 in words is "one billion, twenty-five million, seven hundred twenty-eight thousand, nine hundred twelve".