25713320444 has 12 divisors (see below), whose sum is σ = 51426640944. Its totient is φ = 11019994464.

The previous prime is 25713320443. The next prime is 25713320473. The reversal of 25713320444 is 44402331752.

25713320444 is an admirable number.

It is a super-2 number, since 2×25713320444² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25713320441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459166409 + ... + 459166464.

It is an arithmetic number, because the mean of its divisors is an integer number (4285553412).

Almost surely, 2^25713320444 is an apocalyptic number.

It is an amenable number.

25713320444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25713320444 is a wasteful number, since it uses less digits than its factorization.

25713320444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918332884 (or 918332882 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 25713320444 in words is "twenty-five billion, seven hundred thirteen million, three hundred twenty thousand, four hundred forty-four".