7225406 has 4 divisors (see below), whose sum is σ = 10838112. Its totient is φ = 3612702.

The previous prime is 7225403. The next prime is 7225417. The reversal of 7225406 is 6045227.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7225403) by changing a digit.

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 as a sum of consecutive naturals, namely, 1806350 + ... + 1806353.

It is an arithmetic number, because the mean of its divisors is an integer number (2709528).

Almost surely, 2^7225406 is an apocalyptic number.

7225406 is a deficient number, since it is larger than the sum of its proper divisors (3612706).

7225406 is a wasteful number, since it uses less digits than its factorization.

7225406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612705.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 7225406 is about 2688.0115327134. The cubic root of 7225406 is about 193.3247327393.

The spelling of 7225406 in words is "seven million, two hundred twenty-five thousand, four hundred six".