7407225 has 36 divisors (see below), whose sum is σ = 15165696. Its totient is φ = 3385440.

The previous prime is 7407187. The next prime is 7407229. The reversal of 7407225 is 5227047.

It is not a de Polignac number, because 7407225 - 2⁷ = 7407097 is a prime.

It is an Ulam number.

It is a Curzon number.

7407225 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7407229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 777 + ... + 3926.

Almost surely, 2^7407225 is an apocalyptic number.

7407225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7407225 is an abundant number, since it is smaller than the sum of its proper divisors (7758471).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7407225 is a wasteful number, since it uses less digits than its factorization.

7407225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4726 (or 4718 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 7407225 is about 2721.6217591723. The cubic root of 7407225 is about 194.9329157802.

The spelling of 7407225 in words is "seven million, four hundred seven thousand, two hundred twenty-five".