25066553164 has 48 divisors (see below), whose sum is σ = 44751522816. Its totient is φ = 12283704000.

The previous prime is 25066553119. The next prime is 25066553173. The reversal of 25066553164 is 46135566052.

It is a self number, because there is not a number n which added to its sum of digits gives 25066553164.

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 15 ways as a sum of consecutive naturals, for example, 17274639 + ... + 17276089.

It is an arithmetic number, because the mean of its divisors is an integer number (932323392).

Almost surely, 2^25066553164 is an apocalyptic number.

It is an amenable number.

25066553164 is a deficient number, since it is larger than the sum of its proper divisors (19684969652).

25066553164 is a wasteful number, since it uses less digits than its factorization.

25066553164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966 (or 1964 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 25066553164 in words is "twenty-five billion, sixty-six million, five hundred fifty-three thousand, one hundred sixty-four".