8406025 has 24 divisors (see below), whose sum is σ = 10936800. Its totient is φ = 6403200.

The previous prime is 8406001. The next prime is 8406043. The reversal of 8406025 is 5206048.

8406025 = 198² + 199² + ... + 320².

8406025 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8406025 - 2⁹ = 8405513 is a prime.

It is a super-2 number, since 2×8406025² = 141322512601250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60406 + ... + 60544.

It is an arithmetic number, because the mean of its divisors is an integer number (455700).

Almost surely, 2^8406025 is an apocalyptic number.

It is an amenable number.

8406025 is a deficient number, since it is larger than the sum of its proper divisors (2530775).

8406025 is a wasteful number, since it uses less digits than its factorization.

8406025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 8406025 is about 2899.3145741709. The cubic root of 8406025 is about 203.3278612401.

The spelling of 8406025 in words is "eight million, four hundred six thousand, twenty-five".