25567911797472 has 576 divisors, whose sum is σ = 88447329734400. Its totient is φ = 6904968560640.

The previous prime is 25567911797471. The next prime is 25567911797479. The reversal of 25567911797472 is 27479711976552.

25567911797472 is a `hidden beast` number, since 2 + 5 + 5 + 6 + 79 + 11 + 79 + 7 + 472 = 666.

It is a super-2 number, since 2×25567911797472² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 25567911797472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25567911797471) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2720854278 + ... + 2720863674.

It is an arithmetic number, because the mean of its divisors is an integer number (153554391900).

Almost surely, 2^{25567911797472} is an apocalyptic number.

25567911797472 is a gapful number since it is divisible by the number (22) 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 25567911797472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44223664867200).

25567911797472 is an abundant number, since it is smaller than the sum of its proper divisors (62879417936928).

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

25567911797472 is a wasteful number, since it uses less digits than its factorization.

25567911797472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12119 (or 12108 counting only the distinct ones).

The product of its digits is 466754400, while the sum is 72.

The spelling of 25567911797472 in words is "twenty-five trillion, five hundred sixty-seven billion, nine hundred eleven million, seven hundred ninety-seven thousand, four hundred seventy-two".