25052451066 has 64 divisors (see below), whose sum is σ = 55923840000. Its totient is φ = 8313154416.

The previous prime is 25052451041. The next prime is 25052451071. The reversal of 25052451066 is 66015425052.

25052451066 is a `hidden beast` number, since 2 + 505 + 2 + 45 + 106 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 25052451066.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 17170245 + ... + 17171703.

It is an arithmetic number, because the mean of its divisors is an integer number (873810000).

Almost surely, 2^25052451066 is an apocalyptic number.

25052451066 is an abundant number, since it is smaller than the sum of its proper divisors (30871388934).

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

25052451066 is a wasteful number, since it uses less digits than its factorization.

25052451066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688 (or 2682 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 25052451066 in words is "twenty-five billion, fifty-two million, four hundred fifty-one thousand, sixty-six".