25443425044 has 6 divisors (see below), whose sum is σ = 44525993834. Its totient is φ = 12721712520.

The previous prime is 25443425011. The next prime is 25443425081. The reversal of 25443425044 is 44052434452.

It can be written as a sum of positive squares in only one way, i.e., 24831456400 + 611968644 = 157580^2 + 24738^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25443424994 and 25443425012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3180428127 + ... + 3180428134.

Almost surely, 2^25443425044 is an apocalyptic number.

It is an amenable number.

25443425044 is a deficient number, since it is larger than the sum of its proper divisors (19082568790).

25443425044 is a wasteful number, since it uses less digits than its factorization.

25443425044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6360856265 (or 6360856263 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 37.

Adding to 25443425044 its reverse (44052434452), we get a palindrome (69495859496).

The spelling of 25443425044 in words is "twenty-five billion, four hundred forty-three million, four hundred twenty-five thousand, forty-four".