1325165549546 has 16 divisors (see below), whose sum is σ = 1992125421000. Its totient is φ = 661124894208.

The previous prime is 1325165549447. The next prime is 1325165549623. The reversal of 1325165549546 is 6459455615231.

It can be written as a sum of positive squares in 4 ways, for example, as 1254388800025 + 70776749521 = 1119995^2 + 266039^2 .

It is a super-2 number, since 2×1325165549546² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1325165549491 and 1325165549500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2024870 + ... + 2598158.

Almost surely, 2^{1325165549546} is an apocalyptic number.

1325165549546 is a deficient number, since it is larger than the sum of its proper divisors (666959871454).

1325165549546 is a wasteful number, since it uses less digits than its factorization.

1325165549546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575833.

The product of its digits is 19440000, while the sum is 56.

The spelling of 1325165549546 in words is "one trillion, three hundred twenty-five billion, one hundred sixty-five million, five hundred forty-nine thousand, five hundred forty-six".