1606568925025 has 9 divisors (see below), whose sum is σ = 1992153325593. Its totient is φ = 1285250070000.

The previous prime is 1606568924999. The next prime is 1606568925077. The reversal of 1606568925025 is 5205298656061.

The square root of 1606568925025 is 1267505.

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 297137280609 + 1309431644416 = 545103^2 + 1144304^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1606568925025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6210775 + ... + 6464275.

Almost surely, 2^{1606568925025} is an apocalyptic number.

1606568925025 is the 1267505-th square number.

1606568925025 is the 633753-rd centered octagonal number.

It is an amenable number.

1606568925025 is a deficient number, since it is larger than the sum of its proper divisors (385584400568).

1606568925025 is an frugal number, since it uses more digits than its factorization.

1606568925025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507012 (or 253506 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 55.

The spelling of 1606568925025 in words is "one trillion, six hundred six billion, five hundred sixty-eight million, nine hundred twenty-five thousand, twenty-five".