25566341472 has 576 divisors, whose sum is σ = 91239160320. Its totient is φ = 6820070400.

The previous prime is 25566341467. The next prime is 25566341473. The reversal of 25566341472 is 27414366552.

25566341472 is a `hidden beast` number, since 2 + 5 + 5 + 6 + 634 + 1 + 4 + 7 + 2 = 666.

It is a super-3 number, since 3×25566341472³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25566341473) 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, 195162847 + ... + 195162977.

It is an arithmetic number, because the mean of its divisors is an integer number (158401320).

Almost surely, 2^25566341472 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 25566341472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45619580160).

25566341472 is an abundant number, since it is smaller than the sum of its proper divisors (65672818848).

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

25566341472 is a wasteful number, since it uses less digits than its factorization.

25566341472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 227 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The spelling of 25566341472 in words is "twenty-five billion, five hundred sixty-six million, three hundred forty-one thousand, four hundred seventy-two".