4491625 has 8 divisors (see below), whose sum is σ = 5605704. Its totient is φ = 3593200.

The previous prime is 4491623. The next prime is 4491631. The reversal of 4491625 is 5261944.

It can be written as a sum of positive squares in 4 ways, for example, as 47961 + 4443664 = 219^2 + 2108^2 .

It is not a de Polignac number, because 4491625 - 2¹ = 4491623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4491623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17842 + ... + 18091.

It is an arithmetic number, because the mean of its divisors is an integer number (700713).

Almost surely, 2^4491625 is an apocalyptic number.

It is an amenable number.

4491625 is a deficient number, since it is larger than the sum of its proper divisors (1114079).

4491625 is an equidigital number, since it uses as much as digits as its factorization.

4491625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35948 (or 35938 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 4491625 is about 2119.3454178118. The cubic root of 4491625 is about 164.9938779486.

The spelling of 4491625 in words is "four million, four hundred ninety-one thousand, six hundred twenty-five".