1305004125 has 16 divisors (see below), whose sum is σ = 2171527488. Its totient is φ = 696002000.

The previous prime is 1305004123. The next prime is 1305004139. The reversal of 1305004125 is 5214005031.

It is not a de Polignac number, because 1305004125 - 2¹ = 1305004123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305004123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1739631 + ... + 1740380.

It is an arithmetic number, because the mean of its divisors is an integer number (135720468).

Almost surely, 2^1305004125 is an apocalyptic number.

1305004125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1305004125 is a deficient number, since it is larger than the sum of its proper divisors (866523363).

1305004125 is an equidigital number, since it uses as much as digits as its factorization.

1305004125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480029 (or 3480019 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1305004125 is about 36124.8408300992. The cubic root of 1305004125 is about 1092.7914660616.

Adding to 1305004125 its reverse (5214005031), we get a palindrome (6519009156).

The spelling of 1305004125 in words is "one billion, three hundred five million, four thousand, one hundred twenty-five".