16225425 has 36 divisors (see below), whose sum is σ = 29862300. Its totient is φ = 8415360.

The previous prime is 16225409. The next prime is 16225427. The reversal of 16225425 is 52452261.

16225425 is a `hidden beast` number, since 16 + 225 + 425 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 992016 + 15233409 = 996^2 + 3903^2 .

It is not a de Polignac number, because 16225425 - 2⁴ = 16225409 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16225427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7351 + ... + 9299.

Almost surely, 2^16225425 is an apocalyptic number.

16225425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16225425 is a deficient number, since it is larger than the sum of its proper divisors (13636875).

16225425 is a wasteful number, since it uses less digits than its factorization.

16225425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002 (or 1994 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 16225425 is about 4028.0795672380. The cubic root of 16225425 is about 253.1621024717.

Adding to 16225425 its reverse (52452261), we get a palindrome (68677686).

The spelling of 16225425 in words is "sixteen million, two hundred twenty-five thousand, four hundred twenty-five".