16206220725 has 24 divisors (see below), whose sum is σ = 26798022912. Its totient is φ = 8642112000.

The previous prime is 16206220691. The next prime is 16206220727. The reversal of 16206220725 is 52702260261.

It is not a de Polignac number, because 16206220725 - 2⁹ = 16206220213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16206220727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 871525 + ... + 889925.

It is an arithmetic number, because the mean of its divisors is an integer number (1116584288).

Almost surely, 2^16206220725 is an apocalyptic number.

16206220725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16206220725 is a deficient number, since it is larger than the sum of its proper divisors (10591802187).

16206220725 is a wasteful number, since it uses less digits than its factorization.

16206220725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30157 (or 30152 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 16206220725 its reverse (52702260261), we get a palindrome (68908480986).

The spelling of 16206220725 in words is "sixteen billion, two hundred six million, two hundred twenty thousand, seven hundred twenty-five".