7225657 has 4 divisors (see below), whose sum is σ = 7539840. Its totient is φ = 6911476.

The previous prime is 7225651. The next prime is 7225661. The reversal of 7225657 is 7565227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7565227 = 1327 ⋅5701.

It is a cyclic number.

It is not a de Polignac number, because 7225657 - 2¹¹ = 7223609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7225651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157057 + ... + 157102.

It is an arithmetic number, because the mean of its divisors is an integer number (1884960).

Almost surely, 2^7225657 is an apocalyptic number.

It is an amenable number.

7225657 is a deficient number, since it is larger than the sum of its proper divisors (314183).

7225657 is a wasteful number, since it uses less digits than its factorization.

7225657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314182.

The product of its digits is 29400, while the sum is 34.

The square root of 7225657 is about 2688.0582210957. The cubic root of 7225657 is about 193.3269713193.

The spelling of 7225657 in words is "seven million, two hundred twenty-five thousand, six hundred fifty-seven".