25440453040144 has 10 divisors (see below), whose sum is σ = 49290877765310. Its totient is φ = 12720226520064.

The previous prime is 25440453040133. The next prime is 25440453040147. The reversal of 25440453040144 is 44104035404452.

It can be written as a sum of positive squares in only one way, i.e., 23708017951744 + 1732435088400 = 4869088^2 + 1316220^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25440453040097 and 25440453040106.

It is not an unprimeable number, because it can be changed into a prime (25440453040147) 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 as a sum of consecutive naturals, namely, 795014157489 + ... + 795014157520.

It is an arithmetic number, because the mean of its divisors is an integer number (4929087776531).

Almost surely, 2^{25440453040144} is an apocalyptic number.

It is an amenable number.

25440453040144 is a deficient number, since it is larger than the sum of its proper divisors (23850424725166).

25440453040144 is a wasteful number, since it uses less digits than its factorization.

25440453040144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590028315017 (or 1590028315011 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 40.

Adding to 25440453040144 its reverse (44104035404452), we get a palindrome (69544488444596).

The spelling of 25440453040144 in words is "twenty-five trillion, four hundred forty billion, four hundred fifty-three million, forty thousand, one hundred forty-four".