7725229 has 4 divisors (see below), whose sum is σ = 8131840. Its totient is φ = 7318620.

The previous prime is 7725199. The next prime is 7725239. The reversal of 7725229 is 9225277.

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.

It is a cyclic number.

It is not a de Polignac number, because 7725229 - 2¹³ = 7717037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7725194 and 7725203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7725239) 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, 203277 + ... + 203314.

It is an arithmetic number, because the mean of its divisors is an integer number (2032960).

Almost surely, 2^7725229 is an apocalyptic number.

It is an amenable number.

7725229 is a deficient number, since it is larger than the sum of its proper divisors (406611).

7725229 is a wasteful number, since it uses less digits than its factorization.

7725229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406610.

The product of its digits is 17640, while the sum is 34.

The square root of 7725229 is about 2779.4296177453. The cubic root of 7725229 is about 197.6835147342.

The spelling of 7725229 in words is "seven million, seven hundred twenty-five thousand, two hundred twenty-nine".