4209025 has 12 divisors (see below), whose sum is σ = 5388544. Its totient is φ = 3258000.

The previous prime is 4209017. The next prime is 4209097. The reversal of 4209025 is 5209024.

It is a happy number.

It is not a de Polignac number, because 4209025 - 2³ = 4209017 is a prime.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4208987 and 4209005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1941 + ... + 3490.

Almost surely, 2^4209025 is an apocalyptic number.

It is an amenable number.

4209025 is a deficient number, since it is larger than the sum of its proper divisors (1179519).

4209025 is a wasteful number, since it uses less digits than its factorization.

4209025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472 (or 5467 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 4209025 is about 2051.5908461484. The cubic root of 4209025 is about 161.4583469534.

Subtracting 4209025 from its reverse (5209024), we obtain a palindrome (999999).

The spelling of 4209025 in words is "four million, two hundred nine thousand, twenty-five".