16349458225 has 27 divisors (see below), whose sum is σ = 20550553387. Its totient is φ = 12903112880.

The previous prime is 16349458201. The next prime is 16349458231. The reversal of 16349458225 is 52285494361.

The square root of 16349458225 is 127865.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5885804961 + 10463653264 = 76719^2 + 102292^2 .

It is not a de Polignac number, because 16349458225 - 2⁹ = 16349457713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 68407656 + ... + 68407894.

Almost surely, 2^16349458225 is an apocalyptic number.

16349458225 is the 127865-th square number.

16349458225 is the 63933-rd centered octagonal number.

It is an amenable number.

16349458225 is a deficient number, since it is larger than the sum of its proper divisors (4201095162).

16349458225 is an frugal number, since it uses more digits than its factorization.

16349458225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 351 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 49.

Multiplying 16349458225 by its sum of digits (49), we get a square (801123453025 = 895055²).

The spelling of 16349458225 in words is "sixteen billion, three hundred forty-nine million, four hundred fifty-eight thousand, two hundred twenty-five".