7223525 has 12 divisors (see below), whose sum is σ = 9039972. Its totient is φ = 5725440.

The previous prime is 7223519. The next prime is 7223533. The reversal of 7223525 is 5253227.

It can be written as a sum of positive squares in 6 ways, for example, as 1682209 + 5541316 = 1297^2 + 2354^2 .

It is not a de Polignac number, because 7223525 - 2¹⁴ = 7207141 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7223494 and 7223503.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1547 + ... + 4103.

It is an arithmetic number, because the mean of its divisors is an integer number (753331).

Almost surely, 2^7223525 is an apocalyptic number.

It is an amenable number.

7223525 is a deficient number, since it is larger than the sum of its proper divisors (1816447).

7223525 is a wasteful number, since it uses less digits than its factorization.

7223525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680 (or 2675 counting only the distinct ones).

The product of its digits is 4200, while the sum is 26.

The square root of 7223525 is about 2687.6616230471. The cubic root of 7223525 is about 193.3079551178.

The spelling of 7223525 in words is "seven million, two hundred twenty-three thousand, five hundred twenty-five".