25978111488 has 240 divisors, whose sum is σ = 85933669536. Its totient is φ = 7400816640.

The previous prime is 25978111483. The next prime is 25978111499. The reversal of 25978111488 is 88411187952.

25978111488 is a `hidden beast` number, since 2 + 597 + 8 + 1 + 1 + 1 + 48 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25978111483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13578820 + ... + 13580732.

Almost surely, 2^25978111488 is an apocalyptic number.

25978111488 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 25978111488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42966834768).

25978111488 is an abundant number, since it is smaller than the sum of its proper divisors (59955558048).

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

25978111488 is a wasteful number, since it uses less digits than its factorization.

25978111488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365 (or 2346 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 54.

The spelling of 25978111488 in words is "twenty-five billion, nine hundred seventy-eight million, one hundred eleven thousand, four hundred eighty-eight".