1205312125 has 32 divisors (see below), whose sum is σ = 1591409664. Its totient is φ = 909532800.

The previous prime is 1205312113. The next prime is 1205312149. The reversal of 1205312125 is 5212135021.

It is not a de Polignac number, because 1205312125 - 2⁷ = 1205311997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1205312096 and 1205312105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207004 + ... + 212746.

It is an arithmetic number, because the mean of its divisors is an integer number (49731552).

Almost surely, 2^1205312125 is an apocalyptic number.

It is an amenable number.

1205312125 is a deficient number, since it is larger than the sum of its proper divisors (386097539).

1205312125 is an equidigital number, since it uses as much as digits as its factorization.

1205312125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5854 (or 5844 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1205312125 is about 34717.6054041750. The cubic root of 1205312125 is about 1064.2243097122.

Adding to 1205312125 its reverse (5212135021), we get a palindrome (6417447146).

The spelling of 1205312125 in words is "one billion, two hundred five million, three hundred twelve thousand, one hundred twenty-five".