16551136270225 has 24 divisors (see below), whose sum is σ = 21746658610880. Its totient is φ = 12460946040000.

The previous prime is 16551136270183. The next prime is 16551136270231. The reversal of 16551136270225 is 52207263115561.

16551136270225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16551136270225 - 2²⁵ = 16551102715793 is a prime.

It is a super-2 number, since 2×16551136270225² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115307406 + ... + 115450855.

Almost surely, 2^{16551136270225} is an apocalyptic number.

It is an amenable number.

16551136270225 is a deficient number, since it is larger than the sum of its proper divisors (5195522340655).

16551136270225 is a wasteful number, since it uses less digits than its factorization.

16551136270225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230758441 (or 230758436 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 46.

Adding to 16551136270225 its reverse (52207263115561), we get a palindrome (68758399385786).

The spelling of 16551136270225 in words is "sixteen trillion, five hundred fifty-one billion, one hundred thirty-six million, two hundred seventy thousand, two hundred twenty-five".