7249885 has 4 divisors (see below), whose sum is σ = 8699868. Its totient is φ = 5799904.

The previous prime is 7249873. The next prime is 7249889. The reversal of 7249885 is 5889427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5889427 = 727 ⋅8101.

It can be written as a sum of positive squares in 2 ways, for example, as 5707321 + 1542564 = 2389^2 + 1242^2 .

It is a cyclic number.

It is not a de Polignac number, because 7249885 - 2¹⁹ = 6725597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7249889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 724984 + ... + 724993.

It is an arithmetic number, because the mean of its divisors is an integer number (2174967).

Almost surely, 2^7249885 is an apocalyptic number.

It is an amenable number.

7249885 is a deficient number, since it is larger than the sum of its proper divisors (1449983).

7249885 is a wasteful number, since it uses less digits than its factorization.

7249885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449982.

The product of its digits is 161280, while the sum is 43.

The square root of 7249885 is about 2692.5610485187. The cubic root of 7249885 is about 193.5428086908.

It can be divided in two parts, 724 and 9885, that added together give a square (10609 = 103²).

The spelling of 7249885 in words is "seven million, two hundred forty-nine thousand, eight hundred eighty-five".