25486206736 has 45 divisors (see below), whose sum is σ = 49979321301. Its totient is φ = 12590164416.

The previous prime is 25486206701. The next prime is 25486206737. The reversal of 25486206736 is 63760268452.

The square root of 25486206736 is 159644.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 13853290000 + 11632916736 = 117700^2 + 107856^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25486206736.

It is not an unprimeable number, because it can be changed into a prime (25486206737) 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 8 ways as a sum of consecutive naturals, for example, 68327446 + ... + 68327818.

Almost surely, 2^25486206736 is an apocalyptic number.

25486206736 is the 159644-th square number.

It is an amenable number.

25486206736 is a deficient number, since it is larger than the sum of its proper divisors (24493114565).

25486206736 is an frugal number, since it uses more digits than its factorization.

25486206736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 49.

Multiplying 25486206736 by its sum of digits (49), we get a square (1248824130064 = 1117508²).

The spelling of 25486206736 in words is "twenty-five billion, four hundred eighty-six million, two hundred six thousand, seven hundred thirty-six".