7225420 has 12 divisors (see below), whose sum is σ = 15173424. Its totient is φ = 2890160.

The previous prime is 7225417. The next prime is 7225429. The reversal of 7225420 is 245227.

It is a junction number, because it is equal to n+sod(n) for n = 7225391 and 7225400.

It is not an unprimeable number, because it can be changed into a prime (7225429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180616 + ... + 180655.

It is an arithmetic number, because the mean of its divisors is an integer number (1264452).

Almost surely, 2^7225420 is an apocalyptic number.

It is an amenable number.

7225420 is an abundant number, since it is smaller than the sum of its proper divisors (7948004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7225420 is a wasteful number, since it uses less digits than its factorization.

7225420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361280 (or 361278 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 7225420 is about 2688.0141368676. The cubic root of 7225420 is about 193.3248576017.

The spelling of 7225420 in words is "seven million, two hundred twenty-five thousand, four hundred twenty".