438625 has 24 divisors (see below), whose sum is σ = 622440. Its totient is φ = 308000.

The previous prime is 438623. The next prime is 438631. The reversal of 438625 is 526834.

It can be written as a sum of positive squares in 4 ways, for example, as 17424 + 421201 = 132^2 + 649^2 .

It is not a de Polignac number, because 438625 - 2¹ = 438623 is a prime.

Its product of digits (5760) is a multiple of the sum of its prime divisors (45).

It is a junction number, because it is equal to n+sod(n) for n = 438593 and 438602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438623) 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, 15111 + ... + 15139.

It is an arithmetic number, because the mean of its divisors is an integer number (25935).

2⁴³⁸⁶²⁵ is an apocalyptic number.

It is an amenable number.

438625 is a deficient number, since it is larger than the sum of its proper divisors (183815).

438625 is a wasteful number, since it uses less digits than its factorization.

438625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 45 counting only the distinct ones).

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

The square root of 438625 is about 662.2877018336. The cubic root of 438625 is about 75.9797383660.

Subtracting 438625 from its reverse (526834), we obtain a square (88209 = 297²).

It can be divided in two parts, 43 and 8625, that added together give a palindrome (8668).

The spelling of 438625 in words is "four hundred thirty-eight thousand, six hundred twenty-five".