25978611848 has 96 divisors (see below), whose sum is σ = 57354467040. Its totient is φ = 10998570240.

The previous prime is 25978611833. The next prime is 25978611889. The reversal of 25978611848 is 84811687952.

It is a super-3 number, since 3×25978611848³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12189743 + ... + 12191873.

It is an arithmetic number, because the mean of its divisors is an integer number (597442365).

Almost surely, 2^25978611848 is an apocalyptic number.

25978611848 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 25978611848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28677233520).

25978611848 is an abundant number, since it is smaller than the sum of its proper divisors (31375855192).

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

25978611848 is a wasteful number, since it uses less digits than its factorization.

25978611848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515 (or 2504 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 59.

The spelling of 25978611848 in words is "twenty-five billion, nine hundred seventy-eight million, six hundred eleven thousand, eight hundred forty-eight".