7215125 has 16 divisors (see below), whose sum is σ = 9081072. Its totient is φ = 5723200.

The previous prime is 7215121. The next prime is 7215127. The reversal of 7215125 is 5215127.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 529 + 7214596 = 23^2 + 2686^2 .

It is not a de Polignac number, because 7215125 - 2² = 7215121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7215125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7215121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24479 + ... + 24771.

It is an arithmetic number, because the mean of its divisors is an integer number (567567).

Almost surely, 2^7215125 is an apocalyptic number.

It is an amenable number.

7215125 is a deficient number, since it is larger than the sum of its proper divisors (1865947).

7215125 is a wasteful number, since it uses less digits than its factorization.

7215125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505 (or 495 counting only the distinct ones).

The product of its digits is 700, while the sum is 23.

The square root of 7215125 is about 2686.0984717616. The cubic root of 7215125 is about 193.2329955633.

The spelling of 7215125 in words is "seven million, two hundred fifteen thousand, one hundred twenty-five".