16345225 has 24 divisors (see below), whose sum is σ = 22984640. Its totient is φ = 11430720.

The previous prime is 16345171. The next prime is 16345229. The reversal of 16345225 is 52254361.

16345225 = 20⁴ + 21⁴ + ... + 38⁴.

16345225 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 16345225 - 2⁷ = 16345097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16345193 and 16345202.

It is not an unprimeable number, because it can be changed into a prime (16345229) 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, 4852 + ... + 7498.

Almost surely, 2^16345225 is an apocalyptic number.

It is an amenable number.

16345225 is a deficient number, since it is larger than the sum of its proper divisors (6639415).

16345225 is a wasteful number, since it uses less digits than its factorization.

16345225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689 (or 2684 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 16345225 is about 4042.9228288455. The cubic root of 16345225 is about 253.7836471677.

Adding to 16345225 its reverse (52254361), we get a palindrome (68599586).

It can be divided in two parts, 1634 and 5225, that added together give a cube (6859 = 19³).

The spelling of 16345225 in words is "sixteen million, three hundred forty-five thousand, two hundred twenty-five".