1325000520 has 96 divisors (see below), whose sum is σ = 4376918520. Its totient is φ = 347535360.

The previous prime is 1325000513. The next prime is 1325000531. The reversal of 1325000520 is 250005231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 387538596 + 937461924 = 19686^2 + 30618^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1325000493 and 1325000502.

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, 8209 + ... + 52128.

Almost surely, 2^1325000520 is an apocalyptic number.

1325000520 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 1325000520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2188459260).

1325000520 is an abundant number, since it is smaller than the sum of its proper divisors (3051918000).

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

1325000520 is a wasteful number, since it uses less digits than its factorization.

1325000520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60415 (or 60408 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1325000520 is about 36400.5565891512. The cubic root of 1325000520 is about 1098.3447611967.

Adding to 1325000520 its reverse (250005231), we get a palindrome (1575005751).

The spelling of 1325000520 in words is "one billion, three hundred twenty-five million, five hundred twenty", and thus it is an aban number.