1328967025 has 27 divisors (see below), whose sum is σ = 1728134401. Its totient is φ = 1013740640.

The previous prime is 1328967007. The next prime is 1328967037. The reversal of 1328967025 is 5207698231.

The square root of 1328967025 is 36455.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 536431921 + 792535104 = 23161^2 + 28152^2 .

It is not a de Polignac number, because 1328967025 - 2¹⁹ = 1328442737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4192167 + ... + 4192483.

Almost surely, 2^1328967025 is an apocalyptic number.

1328967025 is the 36455-th square number.

1328967025 is the 18228-th centered octagonal number.

It is an amenable number.

1328967025 is a deficient number, since it is larger than the sum of its proper divisors (399167376).

1328967025 is an frugal number, since it uses more digits than its factorization.

1328967025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The cubic root of 1328967025 is about 1099.4396664084.

The spelling of 1328967025 in words is "one billion, three hundred twenty-eight million, nine hundred sixty-seven thousand, twenty-five".