25300487856 has 160 divisors (see below), whose sum is σ = 79918297600. Its totient is φ = 6735882240.

The previous prime is 25300487843. The next prime is 25300487857. The reversal of 25300487856 is 65878400352.

It is a super-2 number, since 2×25300487856² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (25300487857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356940 + ... + 421908.

It is an arithmetic number, because the mean of its divisors is an integer number (499489360).

Almost surely, 2^25300487856 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 25300487856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39959148800).

25300487856 is an abundant number, since it is smaller than the sum of its proper divisors (54617809744).

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

25300487856 is a wasteful number, since it uses less digits than its factorization.

25300487856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65067 (or 65061 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 25300487856 in words is "twenty-five billion, three hundred million, four hundred eighty-seven thousand, eight hundred fifty-six".