305040025240000 has 280 divisors, whose sum is σ = 782945835883200. Its totient is φ = 117738862080000.

The previous prime is 305040025239991. The next prime is 305040025240001. The reversal of 305040025240000 is 42520040503.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305040025240001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1982363065 + ... + 1982516935.

Almost surely, 2^{305040025240000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305040025240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391472917941600).

305040025240000 is an abundant number, since it is smaller than the sum of its proper divisors (477905810643200).

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

305040025240000 is a wasteful number, since it uses less digits than its factorization.

305040025240000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155641 (or 155616 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 305040025240000 its reverse (42520040503), we get a palindrome (305082545280503).

The spelling of 305040025240000 in words is "three hundred five trillion, forty billion, twenty-five million, two hundred forty thousand".