1025800321 has 16 divisors (see below), whose sum is σ = 1296649984. Its totient is φ = 789683904.

The previous prime is 1025800309. The next prime is 1025800331. The reversal of 1025800321 is 1230085201.

It is a cyclic number.

It is not a de Polignac number, because 1025800321 - 2⁵ = 1025800289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1025800292 and 1025800301.

It is not an unprimeable number, because it can be changed into a prime (1025800331) 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 15 ways as a sum of consecutive naturals, for example, 148965 + ... + 155698.

It is an arithmetic number, because the mean of its divisors is an integer number (81040624).

Almost surely, 2^1025800321 is an apocalyptic number.

It is an amenable number.

1025800321 is a deficient number, since it is larger than the sum of its proper divisors (270849663).

1025800321 is a wasteful number, since it uses less digits than its factorization.

1025800321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304720.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1025800321 is about 32028.1176624540. The cubic root of 1025800321 is about 1008.5271873962.

Adding to 1025800321 its reverse (1230085201), we get a palindrome (2255885522).

The spelling of 1025800321 in words is "one billion, twenty-five million, eight hundred thousand, three hundred twenty-one".