1325665231 has 6 divisors (see below), whose sum is σ = 1457136296. Its totient is φ = 1205150100.

The previous prime is 1325665171. The next prime is 1325665241.

1325665231 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1325665231 - 2⁹ = 1325664719 is a prime.

It is a super-2 number, since 2×1325665231² = 3514776609364566722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325665241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5477835 + ... + 5478076.

Almost surely, 2^1325665231 is an apocalyptic number.

1325665231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1325665231 is a deficient number, since it is larger than the sum of its proper divisors (131471065).

1325665231 is a wasteful number, since it uses less digits than its factorization.

1325665231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10955933 (or 10955922 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 1325665231 is about 36409.6859503072. The cubic root of 1325665231 is about 1098.5283988082.

It can be divided in two parts, 13256 and 65231, that added together give a palindrome (78487).

The spelling of 1325665231 in words is "one billion, three hundred twenty-five million, six hundred sixty-five thousand, two hundred thirty-one".