6442525 has 12 divisors (see below), whose sum is σ = 8160192. Its totient is φ = 5043440.

The previous prime is 6442493. The next prime is 6442531. The reversal of 6442525 is 5252446.

It is not a de Polignac number, because 6442525 - 2⁵ = 6442493 is a prime.

It is a super-2 number, since 2×6442525² = 83012256751250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6442493 and 6442502.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 1567 + ... + 3916.

It is an arithmetic number, because the mean of its divisors is an integer number (680016).

Almost surely, 2^6442525 is an apocalyptic number.

It is an amenable number.

6442525 is a deficient number, since it is larger than the sum of its proper divisors (1717667).

6442525 is a wasteful number, since it uses less digits than its factorization.

6442525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540 (or 5535 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 6442525 is about 2538.2129540289. The cubic root of 6442525 is about 186.0738616738.

The spelling of 6442525 in words is "six million, four hundred forty-two thousand, five hundred twenty-five".