25752206466 has 144 divisors (see below), whose sum is σ = 65850879744. Its totient is φ = 7251406848.

The previous prime is 25752206449. The next prime is 25752206507. The reversal of 25752206466 is 66460225752.

25752206466 is a `hidden beast` number, since 2 + 5 + 7 + 522 + 0 + 64 + 66 = 666.

It is a super-2 number, since 2×25752206466² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 23346871 + ... + 23347973.

It is an arithmetic number, because the mean of its divisors is an integer number (457297776).

Almost surely, 2^25752206466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25752206466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32925439872).

25752206466 is an abundant number, since it is smaller than the sum of its proper divisors (40098673278).

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

25752206466 is a wasteful number, since it uses less digits than its factorization.

25752206466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485 (or 1475 counting only the distinct ones).

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

The spelling of 25752206466 in words is "twenty-five billion, seven hundred fifty-two million, two hundred six thousand, four hundred sixty-six".