7225561 has 8 divisors (see below), whose sum is σ = 8743680. Its totient is φ = 5828928.

The previous prime is 7225541. The next prime is 7225571. The reversal of 7225561 is 1655227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7225561 - 2¹³ = 7217369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7225531) 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 in 7 ways as a sum of consecutive naturals, for example, 30241 + ... + 30478.

It is an arithmetic number, because the mean of its divisors is an integer number (1092960).

Almost surely, 2^7225561 is an apocalyptic number.

It is an amenable number.

7225561 is a deficient number, since it is larger than the sum of its proper divisors (1518119).

7225561 is a wasteful number, since it uses less digits than its factorization.

7225561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60743.

The product of its digits is 4200, while the sum is 28.

The square root of 7225561 is about 2688.0403642803. The cubic root of 7225561 is about 193.3261151354.

The spelling of 7225561 in words is "seven million, two hundred twenty-five thousand, five hundred sixty-one".