25305104000 has 128 divisors (see below), whose sum is σ = 68634820800. Its totient is φ = 9201792000.

The previous prime is 25305103981. The next prime is 25305104009. The reversal of 25305104000 is 40150352.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (25305104009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104111 + ... + 247889.

Almost surely, 2^25305104000 is an apocalyptic number.

25305104000 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 25305104000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34317410400).

25305104000 is an abundant number, since it is smaller than the sum of its proper divisors (43329716800).

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

25305104000 is a wasteful number, since it uses less digits than its factorization.

25305104000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143819 (or 143797 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 25305104000 its reverse (40150352), we get a palindrome (25345254352).

The spelling of 25305104000 in words is "twenty-five billion, three hundred five million, one hundred four thousand".