25448513800 has 192 divisors, whose sum is σ = 65470809600. Its totient is φ = 9156710400.

The previous prime is 25448513767. The next prime is 25448513801. The reversal of 25448513800 is 831584452.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (25448513801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8746746 + ... + 8749654.

It is an arithmetic number, because the mean of its divisors is an integer number (340993800).

Almost surely, 2^25448513800 is an apocalyptic number.

25448513800 is a gapful number since it is divisible by the number (20) 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 25448513800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32735404800).

25448513800 is an abundant number, since it is smaller than the sum of its proper divisors (40022295800).

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

25448513800 is a wasteful number, since it uses less digits than its factorization.

25448513800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056 (or 3047 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 25448513800 in words is "twenty-five billion, four hundred forty-eight million, five hundred thirteen thousand, eight hundred".