4078225 has 6 divisors (see below), whose sum is σ = 5057030. Its totient is φ = 3262560.

The previous prime is 4078219. The next prime is 4078231. The reversal of 4078225 is 5228704.

It is an interprime number because it is at equal distance from previous prime (4078219) and next prime (4078231).

It can be written as a sum of positive squares in 3 ways, for example, as 50176 + 4028049 = 224^2 + 2007^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4078225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4078193 and 4078202.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81540 + ... + 81589.

Almost surely, 2^4078225 is an apocalyptic number.

It is an amenable number.

4078225 is a deficient number, since it is larger than the sum of its proper divisors (978805).

4078225 is a wasteful number, since it uses less digits than its factorization.

4078225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163139 (or 163134 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 4078225 is about 2019.4615619021. The cubic root of 4078225 is about 159.7682190847.

The spelling of 4078225 in words is "four million, seventy-eight thousand, two hundred twenty-five".