8144425 has 6 divisors (see below), whose sum is σ = 10099118. Its totient is φ = 6515520.

The previous prime is 8144399. The next prime is 8144429. The reversal of 8144425 is 5244418.

It can be written as a sum of positive squares in 3 ways, for example, as 1327104 + 6817321 = 1152^2 + 2611^2 .

It is not a de Polignac number, because 8144425 - 2⁵ = 8144393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8144393 and 8144402.

It is not an unprimeable number, because it can be changed into a prime (8144429) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 162864 + ... + 162913.

Almost surely, 2^8144425 is an apocalyptic number.

It is an amenable number.

8144425 is a deficient number, since it is larger than the sum of its proper divisors (1954693).

8144425 is a wasteful number, since it uses less digits than its factorization.

8144425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325787 (or 325782 counting only the distinct ones).

The product of its digits is 5120, while the sum is 28.

The square root of 8144425 is about 2853.8438990246. The cubic root of 8144425 is about 201.1963708805.

The spelling of 8144425 in words is "eight million, one hundred forty-four thousand, four hundred twenty-five".