1325533530 has 32 divisors (see below), whose sum is σ = 3235204800. Its totient is φ = 347484032.

The previous prime is 1325533519. The next prime is 1325533543. The reversal of 1325533530 is 353355231.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372675 + ... + 376214.

It is an arithmetic number, because the mean of its divisors is an integer number (101100150).

Almost surely, 2^1325533530 is an apocalyptic number.

1325533530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1325533530 is an abundant number, since it is smaller than the sum of its proper divisors (1909671270).

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

1325533530 is a wasteful number, since it uses less digits than its factorization.

1325533530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748958.

The product of its (nonzero) digits is 20250, while the sum is 30.

The square root of 1325533530 is about 36407.8773069785. The cubic root of 1325533530 is about 1098.4920190655.

Adding to 1325533530 its reverse (353355231), we get a palindrome (1678888761).

The spelling of 1325533530 in words is "one billion, three hundred twenty-five million, five hundred thirty-three thousand, five hundred thirty".