28007325 has 18 divisors (see below), whose sum is σ = 50164634. Its totient is φ = 14937120.

The previous prime is 28007323. The next prime is 28007327. The reversal of 28007325 is 52370082.

It is an interprime number because it is at equal distance from previous prime (28007323) and next prime (28007327).

It can be written as a sum of positive squares in 3 ways, for example, as 5225796 + 22781529 = 2286^2 + 4773^2 .

It is not a de Polignac number, because 28007325 - 2¹ = 28007323 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 (28007323) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 62014 + ... + 62463.

Almost surely, 2^28007325 is an apocalyptic number.

28007325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28007325 is a deficient number, since it is larger than the sum of its proper divisors (22157309).

28007325 is a wasteful number, since it uses less digits than its factorization.

28007325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124493 (or 124485 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 28007325 is about 5292.1947243086. The cubic root of 28007325 is about 303.6853746576.

The spelling of 28007325 in words is "twenty-eight million, seven thousand, three hundred twenty-five".