1325121200 has 60 divisors (see below), whose sum is σ = 3428509728. Its totient is φ = 489273600.

The previous prime is 1325121167. The next prime is 1325121221. The reversal of 1325121200 is 21215231.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122216 + ... + 132615.

Almost surely, 2^1325121200 is an apocalyptic number.

1325121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1325121200 is an abundant number, since it is smaller than the sum of its proper divisors (2103388528).

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

1325121200 is a wasteful number, since it uses less digits than its factorization.

1325121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254862 (or 254851 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1325121200 is about 36402.2142183686. The cubic root of 1325121200 is about 1098.3781056419.

Adding to 1325121200 its reverse (21215231), we get a palindrome (1346336431).

The spelling of 1325121200 in words is "one billion, three hundred twenty-five million, one hundred twenty-one thousand, two hundred".