25716049265536 has 128 divisors (see below), whose sum is σ = 60137396444160. Its totient is φ = 10722397317120.

The previous prime is 25716049265497. The next prime is 25716049265537. The reversal of 25716049265536 is 63556294061752.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×25716049265536² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25716049265537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523478671 + ... + 523527793.

It is an arithmetic number, because the mean of its divisors is an integer number (469823409720).

Almost surely, 2^{25716049265536} 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 25716049265536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30068698222080).

25716049265536 is an abundant number, since it is smaller than the sum of its proper divisors (34421347178624).

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

25716049265536 is a wasteful number, since it uses less digits than its factorization.

25716049265536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64972 (or 64960 counting only the distinct ones).

The product of its (nonzero) digits is 81648000, while the sum is 61.

The spelling of 25716049265536 in words is "twenty-five trillion, seven hundred sixteen billion, forty-nine million, two hundred sixty-five thousand, five hundred thirty-six".