7217625 has 32 divisors (see below), whose sum is σ = 12654720. Its totient is φ = 3643200.

The previous prime is 7217611. The next prime is 7217629. The reversal of 7217625 is 5267127.

It is not a de Polignac number, because 7217625 - 2⁸ = 7217369 is a prime.

It is a super-2 number, since 2×7217625² = 104188221281250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7217592 and 7217601.

It is not an unprimeable number, because it can be changed into a prime (7217629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6619 + ... + 7631.

It is an arithmetic number, because the mean of its divisors is an integer number (395460).

Almost surely, 2^7217625 is an apocalyptic number.

7217625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7217625 is a deficient number, since it is larger than the sum of its proper divisors (5437095).

7217625 is a wasteful number, since it uses less digits than its factorization.

7217625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050 (or 1040 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 7217625 is about 2686.5637904208. The cubic root of 7217625 is about 193.2553110328.

The spelling of 7217625 in words is "seven million, two hundred seventeen thousand, six hundred twenty-five".