1025443305 has 48 divisors (see below), whose sum is σ = 1830816000. Its totient is φ = 530719488.

The previous prime is 1025443303. The next prime is 1025443369. The reversal of 1025443305 is 5033445201.

It is not a de Polignac number, because 1025443305 - 2¹ = 1025443303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1025443303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 207301 + ... + 212189.

It is an arithmetic number, because the mean of its divisors is an integer number (38142000).

Almost surely, 2^1025443305 is an apocalyptic number.

1025443305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1025443305 is a deficient number, since it is larger than the sum of its proper divisors (805372695).

1025443305 is a wasteful number, since it uses less digits than its factorization.

1025443305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5038 (or 5035 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1025443305 is about 32022.5436997126. The cubic root of 1025443305 is about 1008.4101723806.

Adding to 1025443305 its reverse (5033445201), we get a palindrome (6058888506).

The spelling of 1025443305 in words is "one billion, twenty-five million, four hundred forty-three thousand, three hundred five".