1982321625 has 16 divisors (see below), whose sum is σ = 3298583808. Its totient is φ = 1057238000.

The previous prime is 1982321617. The next prime is 1982321639. The reversal of 1982321625 is 5261232891.

1982321625 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1982321625 - 2³ = 1982321617 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2642721 + ... + 2643470.

It is an arithmetic number, because the mean of its divisors is an integer number (206161488).

Almost surely, 2^1982321625 is an apocalyptic number.

1982321625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1982321625 is a deficient number, since it is larger than the sum of its proper divisors (1316262183).

1982321625 is an equidigital number, since it uses as much as digits as its factorization.

1982321625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5286209 (or 5286199 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 1982321625 is about 44523.2706008891. The cubic root of 1982321625 is about 1256.1978320457.

The spelling of 1982321625 in words is "one billion, nine hundred eighty-two million, three hundred twenty-one thousand, six hundred twenty-five".