1325365020 has 144 divisors (see below), whose sum is σ = 4604640768. Its totient is φ = 302279040.

The previous prime is 1325364973. The next prime is 1325365037. The reversal of 1325365020 is 205635231.

1325365020 is a `hidden beast` number, since 1 + 3 + 2 + 5 + 3 + 650 + 2 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 794227 + ... + 795893.

It is an arithmetic number, because the mean of its divisors is an integer number (31976672).

Almost surely, 2^1325365020 is an apocalyptic number.

1325365020 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 1325365020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2302320384).

1325365020 is an abundant number, since it is smaller than the sum of its proper divisors (3279275748).

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

1325365020 is a wasteful number, since it uses less digits than its factorization.

1325365020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320 (or 2315 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 1325365020 is about 36405.5630364372. The cubic root of 1325365020 is about 1098.4454680653.

The spelling of 1325365020 in words is "one billion, three hundred twenty-five million, three hundred sixty-five thousand, twenty".