2005251312 has 40 divisors (see below), whose sum is σ = 5245815040. Its totient is φ = 659954880.

The previous prime is 2005251307. The next prime is 2005251319. The reversal of 2005251312 is 2131525002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005251319) 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 7 ways as a sum of consecutive naturals, for example, 260614 + ... + 268197.

It is an arithmetic number, because the mean of its divisors is an integer number (131145376).

Almost surely, 2^2005251312 is an apocalyptic number.

It is an amenable number.

2005251312 is an abundant number, since it is smaller than the sum of its proper divisors (3240563728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2005251312 is a wasteful number, since it uses less digits than its factorization.

2005251312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528901 (or 528895 counting only the distinct ones).

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

The square root of 2005251312 is about 44780.0325145036. The cubic root of 2005251312 is about 1261.0227926124.

Adding to 2005251312 its reverse (2131525002), we get a palindrome (4136776314).

The spelling of 2005251312 in words is "two billion, five million, two hundred fifty-one thousand, three hundred twelve".