25194086848 has 112 divisors (see below), whose sum is σ = 57607200000. Its totient is φ = 10708992000.

The previous prime is 25194086831. The next prime is 25194086861. The reversal of 25194086848 is 84868049152.

It is a tau number, because it is divible by the number of its divisors (112).

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, 50488903 + ... + 50489401.

It is an arithmetic number, because the mean of its divisors is an integer number (514350000).

Almost surely, 2^25194086848 is an apocalyptic number.

25194086848 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 25194086848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28803600000).

25194086848 is an abundant number, since it is smaller than the sum of its proper divisors (32413113152).

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

25194086848 is a wasteful number, since it uses less digits than its factorization.

25194086848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 25194086848 in words is "twenty-five billion, one hundred ninety-four million, eighty-six thousand, eight hundred forty-eight".