1325340405 has 48 divisors (see below), whose sum is σ = 2321879040. Its totient is φ = 699321600.

The previous prime is 1325340403. The next prime is 1325340437. The reversal of 1325340405 is 5040435231.

1325340405 is a `hidden beast` number, since 1 + 3 + 253 + 4 + 0 + 405 = 666.

It is not a de Polignac number, because 1325340405 - 2¹ = 1325340403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325340403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2328961 + ... + 2329529.

It is an arithmetic number, because the mean of its divisors is an integer number (48372480).

Almost surely, 2^1325340405 is an apocalyptic number.

1325340405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1325340405 is a deficient number, since it is larger than the sum of its proper divisors (996538635).

1325340405 is a wasteful number, since it uses less digits than its factorization.

1325340405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1325340405 is about 36405.2249684025. The cubic root of 1325340405 is about 1098.4386678249.

Adding to 1325340405 its reverse (5040435231), we get a palindrome (6365775636).

The spelling of 1325340405 in words is "one billion, three hundred twenty-five million, three hundred forty thousand, four hundred five".