4047025 has 6 divisors (see below), whose sum is σ = 5018342. Its totient is φ = 3237600.

The previous prime is 4047013. The next prime is 4047041. The reversal of 4047025 is 5207404.

4047025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 78961 + 3968064 = 281^2 + 1992^2 .

It is not a de Polignac number, because 4047025 - 2⁵ = 4046993 is a prime.

It is a super-2 number, since 2×4047025² = 32756822701250, which contains 22 as substring.

It is a Duffinian number.

4047025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4046987 and 4047005.

It is an unprimeable number.

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, 80916 + ... + 80965.

Almost surely, 2^4047025 is an apocalyptic number.

It is an amenable number.

4047025 is a deficient number, since it is larger than the sum of its proper divisors (971317).

4047025 is a wasteful number, since it uses less digits than its factorization.

4047025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161891 (or 161886 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 4047025 is about 2011.7218992694. The cubic root of 4047025 is about 159.3597460731.

The spelling of 4047025 in words is "four million, forty-seven thousand, twenty-five".