25439559048 has 36 divisors (see below), whose sum is σ = 68902471365. Its totient is φ = 8479401888.

The previous prime is 25439559031. The next prime is 25439559071. The reversal of 25439559048 is 84095593452.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

25439559048 is a `hidden beast` number, since 2 + 5 + 4 + 3 + 9 + 5 + 590 + 48 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22297059684 + 3142499364 = 149322^2 + 56058^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=112782.

It is a junction number, because it is equal to n+sod(n) for n = 25439558985 and 25439559003.

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 8 ways as a sum of consecutive naturals, for example, 1343986 + ... + 1362782.

Almost surely, 2^25439559048 is an apocalyptic number.

It is an amenable number.

25439559048 is an abundant number, since it is smaller than the sum of its proper divisors (43462912317).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25439559048 is an frugal number, since it uses more digits than its factorization.

25439559048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37606 (or 18802 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 54.

The spelling of 25439559048 in words is "twenty-five billion, four hundred thirty-nine million, five hundred fifty-nine thousand, forty-eight".