16313225 has 12 divisors (see below), whose sum is σ = 20926860. Its totient is φ = 12600000.

The previous prime is 16313221. The next prime is 16313287. The reversal of 16313225 is 52231361.

It can be written as a sum of positive squares in 6 ways, for example, as 1048576 + 15264649 = 1024^2 + 3907^2 .

It is not a de Polignac number, because 16313225 - 2² = 16313221 is a prime.

It is a super-2 number, since 2×16313225² = 532242619801250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16313225.

It is not an unprimeable number, because it can be changed into a prime (16313221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10526 + ... + 11975.

It is an arithmetic number, because the mean of its divisors is an integer number (1743905).

Almost surely, 2^16313225 is an apocalyptic number.

It is an amenable number.

16313225 is a deficient number, since it is larger than the sum of its proper divisors (4613635).

16313225 is a wasteful number, since it uses less digits than its factorization.

16313225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22540 (or 22535 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 16313225 is about 4038.9633571004. The cubic root of 16313225 is about 253.6179232905.

Adding to 16313225 its reverse (52231361), we get a palindrome (68544586).

The spelling of 16313225 in words is "sixteen million, three hundred thirteen thousand, two hundred twenty-five".