450138625 has 16 divisors (see below), whose sum is σ = 565375824. Its totient is φ = 357801600.

The previous prime is 450138617. The next prime is 450138641. The reversal of 450138625 is 526831054.

It can be written as a sum of positive squares in 8 ways, for example, as 251920384 + 198218241 = 15872^2 + 14079^2 .

It is not a de Polignac number, because 450138625 - 2³ = 450138617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8157 + ... + 31093.

It is an arithmetic number, because the mean of its divisors is an integer number (35335989).

Almost surely, 2^450138625 is an apocalyptic number.

It is an amenable number.

450138625 is a deficient number, since it is larger than the sum of its proper divisors (115237199).

450138625 is a wasteful number, since it uses less digits than its factorization.

450138625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23109 (or 23099 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 450138625 is about 21216.4706065830. The cubic root of 450138625 is about 766.3881129408.

Adding to 450138625 its reverse (526831054), we get a palindrome (976969679).

The spelling of 450138625 in words is "four hundred fifty million, one hundred thirty-eight thousand, six hundred twenty-five".