7389225 has 60 divisors (see below), whose sum is σ = 14178780. Its totient is φ = 3801600.

The previous prime is 7389223. The next prime is 7389247. The reversal of 7389225 is 5229837.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2286144 + 5103081 = 1512^2 + 2259^2 .

It is not a de Polignac number, because 7389225 - 2¹ = 7389223 is a prime.

It is a super-2 number, since 2×7389225² = 109201292201250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7389225.

It is not an unprimeable number, because it can be changed into a prime (7389223) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 82981 + ... + 83069.

It is an arithmetic number, because the mean of its divisors is an integer number (236313).

Almost surely, 2^7389225 is an apocalyptic number.

7389225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7389225 is a deficient number, since it is larger than the sum of its proper divisors (6789555).

7389225 is a wasteful number, since it uses less digits than its factorization.

7389225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 138 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 7389225 is about 2718.3128958970. The cubic root of 7389225 is about 194.7748881554.

It can be divided in two parts, 73 and 89225, that added together give a palindrome (89298).

The spelling of 7389225 in words is "seven million, three hundred eighty-nine thousand, two hundred twenty-five".