1025321504 has 48 divisors (see below), whose sum is σ = 2077992000. Its totient is φ = 497643264.

The previous prime is 1025321483. The next prime is 1025321509. The reversal of 1025321504 is 4051235201.

It is a self number, because there is not a number n which added to its sum of digits gives 1025321504.

It is not an unprimeable number, because it can be changed into a prime (1025321509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732197 + ... + 733595.

It is an arithmetic number, because the mean of its divisors is an integer number (43291500).

Almost surely, 2^1025321504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025321504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1038996000).

1025321504 is an abundant number, since it is smaller than the sum of its proper divisors (1052670496).

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

1025321504 is a wasteful number, since it uses less digits than its factorization.

1025321504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1025321504 is about 32020.6418424116. The cubic root of 1025321504 is about 1008.3702448584.

Adding to 1025321504 its reverse (4051235201), we get a palindrome (5076556705).

The spelling of 1025321504 in words is "one billion, twenty-five million, three hundred twenty-one thousand, five hundred four".