7220925 has 36 divisors (see below), whose sum is σ = 13153920. Its totient is φ = 3785760.

The previous prime is 7220921. The next prime is 7220933. The reversal of 7220925 is 5290227.

It is a happy number.

7220925 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7220925 - 2² = 7220921 is a prime.

7220925 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220921) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14836 + ... + 15314.

Almost surely, 2^7220925 is an apocalyptic number.

7220925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7220925 is a deficient number, since it is larger than the sum of its proper divisors (5932995).

7220925 is a wasteful number, since it uses less digits than its factorization.

With its successor (7220926) it forms an eRAP, since the sums of their prime factors are consecutive (562 and 563).

7220925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 7220925 is about 2687.1778876732. The cubic root of 7220925 is about 193.2847595636.

The spelling of 7220925 in words is "seven million, two hundred twenty thousand, nine hundred twenty-five".