1002320825 has 24 divisors (see below), whose sum is σ = 1384732800. Its totient is φ = 713441600.

The previous prime is 1002320801. The next prime is 1002320827. The reversal of 1002320825 is 5280232001.

It is not a de Polignac number, because 1002320825 - 2⁸ = 1002320569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002320825.

It is not an unprimeable number, because it can be changed into a prime (1002320827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25850 + ... + 51699.

It is an arithmetic number, because the mean of its divisors is an integer number (57697200).

Almost surely, 2^1002320825 is an apocalyptic number.

1002320825 is the 25850-th pentagonal number.

It is an amenable number.

1002320825 is a deficient number, since it is larger than the sum of its proper divisors (382411975).

1002320825 is a wasteful number, since it uses less digits than its factorization.

1002320825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77617 (or 77612 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1002320825 is about 31659.4508006693. The cubic root of 1002320825 is about 1000.7730106339.

Adding to 1002320825 its reverse (5280232001), we get a palindrome (6282552826).

The spelling of 1002320825 in words is "one billion, two million, three hundred twenty thousand, eight hundred twenty-five".