25864529386 has 16 divisors (see below), whose sum is σ = 39494926080. Its totient is φ = 12700004800.

The previous prime is 25864529381. The next prime is 25864529387. The reversal of 25864529386 is 68392546852.

It is a self number, because there is not a number n which added to its sum of digits gives 25864529386.

It is not an unprimeable number, because it can be changed into a prime (25864529381) 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, 3111 + ... + 227461.

It is an arithmetic number, because the mean of its divisors is an integer number (2468432880).

Almost surely, 2^25864529386 is an apocalyptic number.

25864529386 is a deficient number, since it is larger than the sum of its proper divisors (13630396694).

25864529386 is a wasteful number, since it uses less digits than its factorization.

25864529386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225389.

The product of its digits is 24883200, while the sum is 58.

The spelling of 25864529386 in words is "twenty-five billion, eight hundred sixty-four million, five hundred twenty-nine thousand, three hundred eighty-six".