25216886146 has 16 divisors (see below), whose sum is σ = 40079828160. Its totient is φ = 11865733200.

The previous prime is 25216886083. The next prime is 25216886147. The reversal of 25216886146 is 64168861252.

It is a self number, because there is not a number n which added to its sum of digits gives 25216886146.

It is not an unprimeable number, because it can be changed into a prime (25216886147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2191621 + ... + 2203096.

It is an arithmetic number, because the mean of its divisors is an integer number (2504989260).

Almost surely, 2^25216886146 is an apocalyptic number.

25216886146 is a deficient number, since it is larger than the sum of its proper divisors (14862942014).

25216886146 is a wasteful number, since it uses less digits than its factorization.

25216886146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394889.

The product of its digits is 1105920, while the sum is 49.

The spelling of 25216886146 in words is "twenty-five billion, two hundred sixteen million, eight hundred eighty-six thousand, one hundred forty-six".