7225919 has 4 divisors (see below), whose sum is σ = 7282944. Its totient is φ = 7168896.

The previous prime is 7225913. The next prime is 7225931. The reversal of 7225919 is 9195227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9195227 = 269 ⋅34183.

It is a de Polignac number, because none of the positive numbers 2^k-7225919 is a prime.

It is a super-2 number, since 2×7225919² = 104427810789122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7225913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28322 + ... + 28575.

It is an arithmetic number, because the mean of its divisors is an integer number (1820736).

Almost surely, 2^7225919 is an apocalyptic number.

7225919 is a deficient number, since it is larger than the sum of its proper divisors (57025).

7225919 is a wasteful number, since it uses less digits than its factorization.

7225919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57024.

The product of its digits is 11340, while the sum is 35.

The square root of 7225919 is about 2688.1069547174. The cubic root of 7225919 is about 193.3293079490.

The spelling of 7225919 in words is "seven million, two hundred twenty-five thousand, nine hundred nineteen".