44145121025 has 12 divisors (see below), whose sum is σ = 57959947692. Its totient is φ = 33238679040.

The previous prime is 44145121019. The next prime is 44145121091. The reversal of 44145121025 is 52012154144.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 256128016 + 43888993009 = 16004^2 + 209497^2 .

It is not a de Polignac number, because 44145121025 - 2⁸ = 44145120769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51935012 + ... + 51935861.

It is an arithmetic number, because the mean of its divisors is an integer number (4829995641).

Almost surely, 2^44145121025 is an apocalyptic number.

It is an amenable number.

44145121025 is a deficient number, since it is larger than the sum of its proper divisors (13814826667).

44145121025 is a wasteful number, since it uses less digits than its factorization.

44145121025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103870900 (or 103870895 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 44145121025 its reverse (52012154144), we get a palindrome (96157275169).

The spelling of 44145121025 in words is "forty-four billion, one hundred forty-five million, one hundred twenty-one thousand, twenty-five".