1325540420 has 24 divisors (see below), whose sum is σ = 2784320448. Its totient is φ = 530085600.

The previous prime is 1325540401. The next prime is 1325540443. The reversal of 1325540420 is 240455231.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1325540420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147455 + ... + 156185.

It is an arithmetic number, because the mean of its divisors is an integer number (116013352).

Almost surely, 2^1325540420 is an apocalyptic number.

1325540420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1325540420 is an abundant number, since it is smaller than the sum of its proper divisors (1458780028).

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

1325540420 is a wasteful number, since it uses less digits than its factorization.

1325540420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16331 (or 16329 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1325540420 is about 36407.9719292355. The cubic root of 1325540420 is about 1098.4939223486.

Adding to 1325540420 its reverse (240455231), we get a palindrome (1565995651).

The spelling of 1325540420 in words is "one billion, three hundred twenty-five million, five hundred forty thousand, four hundred twenty".