38440225 has 24 divisors (see below), whose sum is σ = 50677560. Its totient is φ = 28869120.

The previous prime is 38440201. The next prime is 38440231. The reversal of 38440225 is 52204483.

It can be written as a sum of positive squares in 12 ways, for example, as 506944 + 37933281 = 712^2 + 6159^2 .

It is a de Polignac number, because none of the positive numbers 2^k-38440225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38440193 and 38440202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26109 + ... + 27541.

It is an arithmetic number, because the mean of its divisors is an integer number (2111565).

Almost surely, 2^38440225 is an apocalyptic number.

It is an amenable number.

38440225 is a deficient number, since it is larger than the sum of its proper divisors (12237335).

38440225 is a wasteful number, since it uses less digits than its factorization.

38440225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509 (or 1504 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 38440225 is about 6200.0181451347. The cubic root of 38440225 is about 337.4908273684.

The spelling of 38440225 in words is "thirty-eight million, four hundred forty thousand, two hundred twenty-five".