7641225 has 18 divisors (see below), whose sum is σ = 13686686. Its totient is φ = 4075200.

The previous prime is 7641223. The next prime is 7641241. The reversal of 7641225 is 5221467.

It can be written as a sum of positive squares in 3 ways, for example, as 7056 + 7634169 = 84^2 + 2763^2 .

It is not a de Polignac number, because 7641225 - 2¹ = 7641223 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7641223) 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, 16756 + ... + 17205.

Almost surely, 2^7641225 is an apocalyptic number.

7641225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7641225 is a deficient number, since it is larger than the sum of its proper divisors (6045461).

7641225 is a wasteful number, since it uses less digits than its factorization.

7641225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33977 (or 33969 counting only the distinct ones).

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

The square root of 7641225 is about 2764.2765780580. The cubic root of 7641225 is about 196.9643660801.

The spelling of 7641225 in words is "seven million, six hundred forty-one thousand, two hundred twenty-five".