7125217 has 4 divisors (see below), whose sum is σ = 7772976. Its totient is φ = 6477460.

The previous prime is 7125203. The next prime is 7125263.

It is a happy number.

7125217 is nontrivially palindromic in base 10.

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 de Polignac number, because none of the positive numbers 2^k-7125217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7125191 and 7125200.

It is not an unprimeable number, because it can be changed into a prime (7125277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323863 + ... + 323884.

It is an arithmetic number, because the mean of its divisors is an integer number (1943244).

Almost surely, 2^7125217 is an apocalyptic number.

It is an amenable number.

7125217 is a deficient number, since it is larger than the sum of its proper divisors (647759).

7125217 is a wasteful number, since it uses less digits than its factorization.

7125217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647758.

The product of its digits is 980, while the sum is 25.

The square root of 7125217 is about 2669.3102105226. The cubic root of 7125217 is about 192.4270100522.

It can be divided in two parts, 712 and 5217, that added together give a square (5929 = 77²).

The spelling of 7125217 in words is "seven million, one hundred twenty-five thousand, two hundred seventeen".