25484221696 has 18 divisors (see below), whose sum is σ = 50868896162. Its totient is φ = 12742110720.

The previous prime is 25484221661. The next prime is 25484221709. The reversal of 25484221696 is 69612248452.

It can be written as a sum of positive squares in only one way, i.e., 25242854400 + 241367296 = 158880^2 + 15536^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 49773615 + ... + 49774126.

Almost surely, 2^25484221696 is an apocalyptic number.

It is an amenable number.

25484221696 is a deficient number, since it is larger than the sum of its proper divisors (25384674466).

25484221696 is an frugal number, since it uses more digits than its factorization.

25484221696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99547757 (or 99547743 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The spelling of 25484221696 in words is "twenty-five billion, four hundred eighty-four million, two hundred twenty-one thousand, six hundred ninety-six".