25282221568 has 40 divisors (see below), whose sum is σ = 53486556552. Its totient is φ = 11897511936.

The previous prime is 25282221553. The next prime is 25282221611. The reversal of 25282221568 is 86512228252.

It is a super-3 number, since 3×25282221568³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1443630 + ... + 1461037.

Almost surely, 2^25282221568 is an apocalyptic number.

It is an amenable number.

25282221568 is an abundant number, since it is smaller than the sum of its proper divisors (28204334984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25282221568 is an equidigital number, since it uses as much as digits as its factorization.

25282221568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904702 (or 2904686 counting only the distinct ones).

The product of its digits is 307200, while the sum is 43.

The spelling of 25282221568 in words is "twenty-five billion, two hundred eighty-two million, two hundred twenty-one thousand, five hundred sixty-eight".