1325116181 has 4 divisors (see below), whose sum is σ = 1382729952. Its totient is φ = 1267502412.

The previous prime is 1325116157. The next prime is 1325116207. The reversal of 1325116181 is 1816115231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325116181 is a prime.

It is a super-2 number, since 2×1325116181² = 3511865786296049522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325110181) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 28806851 + ... + 28806896.

It is an arithmetic number, because the mean of its divisors is an integer number (345682488).

Almost surely, 2^1325116181 is an apocalyptic number.

It is an amenable number.

1325116181 is a deficient number, since it is larger than the sum of its proper divisors (57613771).

1325116181 is an equidigital number, since it uses as much as digits as its factorization.

1325116181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57613770.

The product of its digits is 1440, while the sum is 29.

The square root of 1325116181 is about 36402.1452801892. The cubic root of 1325116181 is about 1098.3767189092.

The spelling of 1325116181 in words is "one billion, three hundred twenty-five million, one hundred sixteen thousand, one hundred eighty-one".