1325643464 has 32 divisors (see below), whose sum is σ = 2532600000. Its totient is φ = 650392512.

The previous prime is 1325643461. The next prime is 1325643491. The reversal of 1325643464 is 4643465231.

It is not an unprimeable number, because it can be changed into a prime (1325643461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92237 + ... + 105635.

It is an arithmetic number, because the mean of its divisors is an integer number (79143750).

Almost surely, 2^1325643464 is an apocalyptic number.

It is an amenable number.

1325643464 is a deficient number, since it is larger than the sum of its proper divisors (1206956536).

1325643464 is a wasteful number, since it uses less digits than its factorization.

1325643464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13637 (or 13633 counting only the distinct ones).

The product of its digits is 207360, while the sum is 38.

The square root of 1325643464 is about 36409.3870313687. The cubic root of 1325643464 is about 1098.5223862800.

The spelling of 1325643464 in words is "one billion, three hundred twenty-five million, six hundred forty-three thousand, four hundred sixty-four".