88891725221 has 8 divisors (see below), whose sum is σ = 101360700504. Its totient is φ = 77227200000.

The previous prime is 88891725211. The next prime is 88891725227. The reversal of 88891725221 is 12252719888.

It can be written as a sum of positive squares in 4 ways, for example, as 10709973121 + 78181752100 = 103489^2 + 279610^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 88891725221 - 2²⁶ = 88824616357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88891725227) 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, 201112280 + ... + 201112721.

It is an arithmetic number, because the mean of its divisors is an integer number (12670087563).

Almost surely, 2^88891725221 is an apocalyptic number.

It is an amenable number.

88891725221 is a deficient number, since it is larger than the sum of its proper divisors (12468975283).

88891725221 is a wasteful number, since it uses less digits than its factorization.

88891725221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402225031.

The product of its digits is 1290240, while the sum is 53.

The spelling of 88891725221 in words is "eighty-eight billion, eight hundred ninety-one million, seven hundred twenty-five thousand, two hundred twenty-one".