16220077325 has 24 divisors (see below), whose sum is σ = 20460732840. Its totient is φ = 12753536000.

The previous prime is 16220077297. The next prime is 16220077387. The reversal of 16220077325 is 52377002261.

It can be written as a sum of positive squares in 12 ways, for example, as 629558281 + 15590519044 = 25091^2 + 124862^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16220077325 is a prime.

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 in 23 ways as a sum of consecutive naturals, for example, 322481 + ... + 369369.

It is an arithmetic number, because the mean of its divisors is an integer number (852530535).

Almost surely, 2^16220077325 is an apocalyptic number.

It is an amenable number.

16220077325 is a deficient number, since it is larger than the sum of its proper divisors (4240655515).

16220077325 is a wasteful number, since it uses less digits than its factorization.

16220077325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47137 (or 47132 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

Adding to 16220077325 its reverse (52377002261), we get a palindrome (68597079586).

The spelling of 16220077325 in words is "sixteen billion, two hundred twenty million, seventy-seven thousand, three hundred twenty-five".