1325580672 has 64 divisors (see below), whose sum is σ = 3791939760. Its totient is φ = 407869440.

The previous prime is 1325580667. The next prime is 1325580701. The reversal of 1325580672 is 2760855231.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1325580672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127779 + ... + 137762.

Almost surely, 2^1325580672 is an apocalyptic number.

1325580672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1325580672 is an abundant number, since it is smaller than the sum of its proper divisors (2466359088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1325580672 is a wasteful number, since it uses less digits than its factorization.

1325580672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265571 (or 265559 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 1325580672 is about 36408.5247160607. The cubic root of 1325580672 is about 1098.5050413683.

The spelling of 1325580672 in words is "one billion, three hundred twenty-five million, five hundred eighty thousand, six hundred seventy-two".