1325201020 has 96 divisors (see below), whose sum is σ = 3375138816. Its totient is φ = 430444800.

The previous prime is 1325200967. The next prime is 1325201039. The reversal of 1325201020 is 201025231.

It is a junction number, because it is equal to n+sod(n) for n = 1325200985 and 1325201003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81187 + ... + 96133.

It is an arithmetic number, because the mean of its divisors is an integer number (35157696).

Almost surely, 2^1325201020 is an apocalyptic number.

1325201020 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 1325201020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1687569408).

1325201020 is an abundant number, since it is smaller than the sum of its proper divisors (2049937796).

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

1325201020 is a wasteful number, since it uses less digits than its factorization.

1325201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15011 (or 15009 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1325201020 is about 36403.3105637386. The cubic root of 1325201020 is about 1098.4001591668.

Adding to 1325201020 its reverse (201025231), we get a palindrome (1526226251).

The spelling of 1325201020 in words is "one billion, three hundred twenty-five million, two hundred one thousand, twenty".