25448199168 has 176 divisors, whose sum is σ = 78292738944. Its totient is φ = 7198310400.

The previous prime is 25448199121. The next prime is 25448199197. The reversal of 25448199168 is 86199184452.

It is a super-2 number, since 2×25448199168² (a number of 22 digits) contains 22 as substring.

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, 2166046 + ... + 2177762.

Almost surely, 2^25448199168 is an apocalyptic number.

25448199168 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 25448199168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39146369472).

25448199168 is an abundant number, since it is smaller than the sum of its proper divisors (52844539776).

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

25448199168 is a wasteful number, since it uses less digits than its factorization.

25448199168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11848 (or 11830 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 57.

The spelling of 25448199168 in words is "twenty-five billion, four hundred forty-eight million, one hundred ninety-nine thousand, one hundred sixty-eight".