7440325 has 6 divisors (see below), whose sum is σ = 9226034. Its totient is φ = 5952240.

The previous prime is 7440319. The next prime is 7440347. The reversal of 7440325 is 5230447.

It can be written as a sum of positive squares in 3 ways, for example, as 74529 + 7365796 = 273^2 + 2714^2 .

It is not a de Polignac number, because 7440325 - 2³ = 7440317 is a prime.

It is a super-2 number, since 2×7440325² = 110716872211250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 297613 = 7440325 / (7 + 4 + 4 + 0 + 3 + 2 + 5).

It is a d-powerful number, because it can be written as 7⁸ + 4 + 4⁵ + 0 + 3¹³ + 2¹¹ + 5⁷ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7440325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 148782 + ... + 148831.

Almost surely, 2^7440325 is an apocalyptic number.

It is an amenable number.

7440325 is a deficient number, since it is larger than the sum of its proper divisors (1785709).

7440325 is a wasteful number, since it uses less digits than its factorization.

7440325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297623 (or 297618 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 7440325 is about 2727.6959141371. The cubic root of 7440325 is about 195.2228440775. Note that the first 3 decimals are identical.

The spelling of 7440325 in words is "seven million, four hundred forty thousand, three hundred twenty-five".