25305232440000 has 280 divisors, whose sum is σ = 83677676322240. Its totient is φ = 6747039872000.

The previous prime is 25305232439989. The next prime is 25305232440011. The reversal of 25305232440000 is 4423250352.

It is an interprime number because it is at equal distance from previous prime (25305232439989) and next prime (25305232440011).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 25305232440000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1118748691 + ... + 1118771309.

It is an arithmetic number, because the mean of its divisors is an integer number (298848844008).

Almost surely, 2^{25305232440000} is an apocalyptic number.

25305232440000 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 25305232440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41838838161120).

25305232440000 is an abundant number, since it is smaller than the sum of its proper divisors (58372443882240).

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

25305232440000 is an equidigital number, since it uses as much as digits as its factorization.

25305232440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31977 (or 31952 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 25305232440000 its reverse (4423250352), we get a palindrome (25309655690352).

The spelling of 25305232440000 in words is "twenty-five trillion, three hundred five billion, two hundred thirty-two million, four hundred forty thousand".