25316336544 has 72 divisors (see below), whose sum is σ = 68300372448. Its totient is φ = 8210661120.

The previous prime is 25316336537. The next prime is 25316336557. The reversal of 25316336544 is 44563361352.

It is a junction number, because it is equal to n+sod(n) for n = 25316336496 and 25316336505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35109 + ... + 227739.

It is an arithmetic number, because the mean of its divisors is an integer number (948616284).

Almost surely, 2^25316336544 is an apocalyptic number.

25316336544 is a gapful number since it is divisible by the number (24) 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 25316336544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34150186224).

25316336544 is an abundant number, since it is smaller than the sum of its proper divisors (42984035904).

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

25316336544 is a wasteful number, since it uses less digits than its factorization.

25316336544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192718 (or 192673 counting only the distinct ones).

The product of its digits is 777600, while the sum is 42.

Adding to 25316336544 its reverse (44563361352), we get a palindrome (69879697896).

The spelling of 25316336544 in words is "twenty-five billion, three hundred sixteen million, three hundred thirty-six thousand, five hundred forty-four".