1244100405025 has 12 divisors (see below), whose sum is σ = 1542923028972. Its totient is φ = 995126435840.

The previous prime is 1244100405017. The next prime is 1244100405049. The reversal of 1244100405025 is 5205040014421.

It can be written as a sum of positive squares in 6 ways, for example, as 135695720161 + 1108404684864 = 368369^2 + 1052808^2 .

It is not a de Polignac number, because 1244100405025 - 2³ = 1244100405017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1244100404984 and 1244100405002.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3682144 + ... + 4005793.

It is an arithmetic number, because the mean of its divisors is an integer number (128576919081).

Almost surely, 2^{1244100405025} is an apocalyptic number.

It is an amenable number.

1244100405025 is a deficient number, since it is larger than the sum of its proper divisors (298822623947).

1244100405025 is an equidigital number, since it uses as much as digits as its factorization.

1244100405025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7694420 (or 7694415 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 1244100405025 its reverse (5205040014421), we get a palindrome (6449140419446).

The spelling of 1244100405025 in words is "one trillion, two hundred forty-four billion, one hundred million, four hundred five thousand, twenty-five".