1165546956025 has 9 divisors (see below), whose sum is σ = 1445284919053. Its totient is φ = 932433246400.

The previous prime is 1165546955977. The next prime is 1165546956037. The reversal of 1165546956025 is 5206596455611.

The square root of 1165546956025 is 1079605.

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 303835771369 + 861711184656 = 551213^2 + 928284^2 .

It is not a de Polignac number, because 1165546956025 - 2²¹ = 1165544858873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5290065 + ... + 5505985.

Almost surely, 2^{1165546956025} is an apocalyptic number.

1165546956025 is the 1079605-th square number.

1165546956025 is the 539803-rd centered octagonal number.

It is an amenable number.

1165546956025 is a deficient number, since it is larger than the sum of its proper divisors (279737963028).

1165546956025 is an frugal number, since it uses more digits than its factorization.

1165546956025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431852 (or 215926 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 55.

The spelling of 1165546956025 in words is "one trillion, one hundred sixty-five billion, five hundred forty-six million, nine hundred fifty-six thousand, twenty-five".