5625221 has 12 divisors (see below), whose sum is σ = 6618528. Its totient is φ = 4683312.

The previous prime is 5625187. The next prime is 5625223. The reversal of 5625221 is 1225265.

It is not a de Polignac number, because 5625221 - 2⁶ = 5625157 is a prime.

It is a super-2 number, since 2×5625221² = 63286222597682, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5625223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9290 + ... + 9876.

It is an arithmetic number, because the mean of its divisors is an integer number (551544).

Almost surely, 2^5625221 is an apocalyptic number.

It is an amenable number.

5625221 is a deficient number, since it is larger than the sum of its proper divisors (993307).

5625221 is an equidigital number, since it uses as much as digits as its factorization.

5625221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 631 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 5625221 is about 2371.7548355595. The cubic root of 5625221 is about 177.8469943004.

The spelling of 5625221 in words is "five million, six hundred twenty-five thousand, two hundred twenty-one".