1325558900 has 72 divisors (see below), whose sum is σ = 2942520000. Its totient is φ = 518158080.

The previous prime is 1325558873. The next prime is 1325558911. The reversal of 1325558900 is 98555231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1173536 + ... + 1174664.

Almost surely, 2^1325558900 is an apocalyptic number.

1325558900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1325558900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471260000).

1325558900 is an abundant number, since it is smaller than the sum of its proper divisors (1616961100).

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

1325558900 is a wasteful number, since it uses less digits than its factorization.

1325558900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 38.

The square root of 1325558900 is about 36408.2257189224. The cubic root of 1325558900 is about 1098.4990272032.

The spelling of 1325558900 in words is "one billion, three hundred twenty-five million, five hundred fifty-eight thousand, nine hundred".