25244121441 has 16 divisors (see below), whose sum is σ = 41964254208. Its totient is φ = 13113829200.

The previous prime is 25244121401. The next prime is 25244121467. The reversal of 25244121441 is 14412144252.

It is not a de Polignac number, because 25244121441 - 2¹¹ = 25244119393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25244121399 and 25244121408.

It is not an unprimeable number, because it can be changed into a prime (25244121401) 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 in 15 ways as a sum of consecutive naturals, for example, 54640725 + ... + 54641186.

It is an arithmetic number, because the mean of its divisors is an integer number (2622765888).

Almost surely, 2^25244121441 is an apocalyptic number.

25244121441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25244121441 is a deficient number, since it is larger than the sum of its proper divisors (16720132767).

25244121441 is a wasteful number, since it uses less digits than its factorization.

25244121441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109281932.

The product of its digits is 10240, while the sum is 30.

Adding to 25244121441 its reverse (14412144252), we get a palindrome (39656265693).

The spelling of 25244121441 in words is "twenty-five billion, two hundred forty-four million, one hundred twenty-one thousand, four hundred forty-one".