2011445405125 has 16 divisors (see below), whose sum is σ = 2703382626672. Its totient is φ = 1485375067200.

The previous prime is 2011445405093. The next prime is 2011445405129. The reversal of 2011445405125 is 5215045441102.

It can be written as a sum of positive squares in 8 ways, for example, as 1076213283649 + 935232121476 = 1037407^2 + 967074^2 .

It is not a de Polignac number, because 2011445405125 - 2⁵ = 2011445405093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011445405129) 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, 618904654 + ... + 618907903.

It is an arithmetic number, because the mean of its divisors is an integer number (168961414167).

Almost surely, 2^{2011445405125} is an apocalyptic number.

2011445405125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2011445405125 is a deficient number, since it is larger than the sum of its proper divisors (691937221547).

2011445405125 is a wasteful number, since it uses less digits than its factorization.

2011445405125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237812585 (or 1237812575 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 34.

The spelling of 2011445405125 in words is "two trillion, eleven billion, four hundred forty-five million, four hundred five thousand, one hundred twenty-five".