16426225 has 6 divisors (see below), whose sum is σ = 20368550. Its totient is φ = 13140960.

The previous prime is 16426219. The next prime is 16426229. The reversal of 16426225 is 52262461.

It can be written as a sum of positive squares in 3 ways, for example, as 1495729 + 14930496 = 1223^2 + 3864^2 .

It is not a de Polignac number, because 16426225 - 2³ = 16426217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16426193 and 16426202.

It is not an unprimeable number, because it can be changed into a prime (16426229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 328500 + ... + 328549.

Almost surely, 2^16426225 is an apocalyptic number.

It is an amenable number.

16426225 is a deficient number, since it is larger than the sum of its proper divisors (3942325).

16426225 is an equidigital number, since it uses as much as digits as its factorization.

16426225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657059 (or 657054 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 16426225 is about 4052.9279539612. The cubic root of 16426225 is about 254.2021712771.

Adding to 16426225 its reverse (52262461), we get a palindrome (68688686).

The spelling of 16426225 in words is "sixteen million, four hundred twenty-six thousand, two hundred twenty-five".