1798616265625 has 21 divisors (see below), whose sum is σ = 2248451121801. Its totient is φ = 1438758900000.

The previous prime is 1798616265581. The next prime is 1798616265637. The reversal of 1798616265625 is 5265626168971.

The square root of 1798616265625 is 1341125.

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

It can be written as a sum of positive squares in 10 ways, for example, as 1748495802249 + 50120463376 = 1322307^2 + 223876^2 .

It is not a de Polignac number, because 1798616265625 - 2¹⁵ = 1798616232857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 167635261 + ... + 167645989.

Almost surely, 2^{1798616265625} is an apocalyptic number.

1798616265625 is the 1341125-th square number.

1798616265625 is the 670563-rd centered octagonal number.

It is an amenable number.

1798616265625 is a deficient number, since it is larger than the sum of its proper divisors (449834856176).

1798616265625 is an frugal number, since it uses more digits than its factorization.

1798616265625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21488 (or 10734 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 64.

Multiplying 1798616265625 by its sum of digits (64), we get a square (115111441000000 = 10729000²).

The spelling of 1798616265625 in words is "one trillion, seven hundred ninety-eight billion, six hundred sixteen million, two hundred sixty-five thousand, six hundred twenty-five".