25439490048 has 208 divisors, whose sum is σ = 78345276800. Its totient is φ = 7191134208.

The previous prime is 25439490017. The next prime is 25439490079. The reversal of 25439490048 is 84009493452.

It is an interprime number because it is at equal distance from previous prime (25439490017) and next prime (25439490079).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 25439489979 and 25439490006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8342028 + ... + 8345076.

Almost surely, 2^25439490048 is an apocalyptic number.

25439490048 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25439490048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39172638400).

25439490048 is an abundant number, since it is smaller than the sum of its proper divisors (52905786752).

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

25439490048 is an equidigital number, since it uses as much as digits as its factorization.

25439490048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180 (or 3158 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 25439490048 in words is "twenty-five billion, four hundred thirty-nine million, four hundred ninety thousand, forty-eight".