7221025 has 12 divisors (see below), whose sum is σ = 10233472. Its totient is φ = 4951440.

The previous prime is 7221017. The next prime is 7221037. The reversal of 7221025 is 5201227.

It is not a de Polignac number, because 7221025 - 2³ = 7221017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7220993 and 7221011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20457 + ... + 20806.

Almost surely, 2^7221025 is an apocalyptic number.

It is an amenable number.

7221025 is a deficient number, since it is larger than the sum of its proper divisors (3012447).

7221025 is a wasteful number, since it uses less digits than its factorization.

7221025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41280 (or 41275 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 7221025 is about 2687.1964944901. The cubic root of 7221025 is about 193.2856518032.

The spelling of 7221025 in words is "seven million, two hundred twenty-one thousand, twenty-five".