1325111505 has 16 divisors (see below), whose sum is σ = 2136366144. Its totient is φ = 701330240.

The previous prime is 1325111483. The next prime is 1325111507. The reversal of 1325111505 is 5051115231.

It is not a de Polignac number, because 1325111505 - 2¹⁰ = 1325110481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1325111507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335214 + ... + 339143.

It is an arithmetic number, because the mean of its divisors is an integer number (133522884).

Almost surely, 2^1325111505 is an apocalyptic number.

1325111505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1325111505 is a deficient number, since it is larger than the sum of its proper divisors (811254639).

1325111505 is a wasteful number, since it uses less digits than its factorization.

1325111505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674496.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 1325111505 is about 36402.0810531486. The cubic root of 1325111505 is about 1098.3754269431.

Adding to 1325111505 its reverse (5051115231), we get a palindrome (6376226736).

The spelling of 1325111505 in words is "one billion, three hundred twenty-five million, one hundred eleven thousand, five hundred five".