2005250243105 has 16 divisors (see below), whose sum is σ = 2454095209104. Its totient is φ = 1572516430080.

The previous prime is 2005250243053. The next prime is 2005250243107. The reversal of 2005250243105 is 5013420525002.

It can be written as a sum of positive squares in 8 ways, for example, as 69000257041 + 1936249986064 = 262679^2 + 1391492^2 .

It is not a de Polignac number, because 2005250243105 - 2¹² = 2005250239009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005250243107) 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, 11130074 + ... + 11308803.

It is an arithmetic number, because the mean of its divisors is an integer number (153380950569).

Almost surely, 2^{2005250243105} is an apocalyptic number.

It is an amenable number.

2005250243105 is a deficient number, since it is larger than the sum of its proper divisors (448844965999).

2005250243105 is a wasteful number, since it uses less digits than its factorization.

2005250243105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22439236.

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 2005250243105 its reverse (5013420525002), we get a palindrome (7018670768107).

The spelling of 2005250243105 in words is "two trillion, five billion, two hundred fifty million, two hundred forty-three thousand, one hundred five".