438081825 has 24 divisors (see below), whose sum is σ = 726391008. Its totient is φ = 232967680.

The previous prime is 438081821. The next prime is 438081829. The reversal of 438081825 is 528180834.

It is an interprime number because it is at equal distance from previous prime (438081821) and next prime (438081829).

It is not a de Polignac number, because 438081825 - 2² = 438081821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (438081821) 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, 18202 + ... + 34748.

It is an arithmetic number, because the mean of its divisors is an integer number (30266292).

Almost surely, 2^438081825 is an apocalyptic number.

It is an amenable number.

438081825 is a deficient number, since it is larger than the sum of its proper divisors (288309183).

438081825 is a wasteful number, since it uses less digits than its factorization.

438081825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16913 (or 16908 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 438081825 is about 20930.4043200317. The cubic root of 438081825 is about 759.4836202563.

Subtracting 438081825 from its reverse (528180834), we obtain a palindrome (90099009).

The spelling of 438081825 in words is "four hundred thirty-eight million, eighty-one thousand, eight hundred twenty-five".