1325545000 has 80 divisors (see below), whose sum is σ = 3344819940. Its totient is φ = 489408000.

The previous prime is 1325544977. The next prime is 1325545009. The reversal of 1325545000 is 5455231.

It can be written as a sum of positive squares in 10 ways, for example, as 260305956 + 1065239044 = 16134^2 + 32638^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1325545009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 54804 + ... + 75196.

Almost surely, 2^1325545000 is an apocalyptic number.

1325545000 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 1325545000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1672409970).

1325545000 is an abundant number, since it is smaller than the sum of its proper divisors (2019274940).

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

1325545000 is a wasteful number, since it uses less digits than its factorization.

1325545000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20432 (or 20413 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 1325545000 is about 36408.0348274938. The cubic root of 1325545000 is about 1098.4951875172.

The spelling of 1325545000 in words is "one billion, three hundred twenty-five million, five hundred forty-five thousand".