1325664100 has 36 divisors (see below), whose sum is σ = 2899369984. Its totient is φ = 526085280.

The previous prime is 1325664089. The next prime is 1325664101. The reversal of 1325664100 is 14665231.

It is not an unprimeable number, because it can be changed into a prime (1325664101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39492 + ... + 64891.

Almost surely, 2^1325664100 is an apocalyptic number.

1325664100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1325664100 is an abundant number, since it is smaller than the sum of its proper divisors (1573705884).

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

1325664100 is a wasteful number, since it uses less digits than its factorization.

1325664100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104524 (or 104517 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1325664100 is about 36409.6704187226. The cubic root of 1325664100 is about 1098.5280864025.

The spelling of 1325664100 in words is "one billion, three hundred twenty-five million, six hundred sixty-four thousand, one hundred".