1205125625 has 20 divisors (see below), whose sum is σ = 1642836624. Its totient is φ = 876450000.

The previous prime is 1205125619. The next prime is 1205125627. The reversal of 1205125625 is 5265215021.

It is not a de Polignac number, because 1205125625 - 2⁴ = 1205125609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1205125627) 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 19 ways as a sum of consecutive naturals, for example, 80771 + ... + 94520.

Almost surely, 2^1205125625 is an apocalyptic number.

It is an amenable number.

1205125625 is a deficient number, since it is larger than the sum of its proper divisors (437710999).

1205125625 is an equidigital number, since it uses as much as digits as its factorization.

1205125625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175322 (or 175307 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1205125625 is about 34714.9193431297. The cubic root of 1205125625 is about 1064.1694171336.

The spelling of 1205125625 in words is "one billion, two hundred five million, one hundred twenty-five thousand, six hundred twenty-five".