7225905 has 16 divisors (see below), whose sum is σ = 11721600. Its totient is φ = 3800448.

The previous prime is 7225879. The next prime is 7225913. The reversal of 7225905 is 5095227.

It is a happy number.

It is not a de Polignac number, because 7225905 - 2¹³ = 7217713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2205 + ... + 4394.

It is an arithmetic number, because the mean of its divisors is an integer number (732600).

Almost surely, 2^7225905 is an apocalyptic number.

It is an amenable number.

7225905 is a deficient number, since it is larger than the sum of its proper divisors (4495695).

7225905 is a wasteful number, since it uses less digits than its factorization.

7225905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 7225905 is about 2688.1043506531. The cubic root of 7225905 is about 193.3291830923.

The spelling of 7225905 in words is "seven million, two hundred twenty-five thousand, nine hundred five".