7161225 has 12 divisors (see below), whose sum is σ = 11840016. Its totient is φ = 3819280.

The previous prime is 7161223. The next prime is 7161229. The reversal of 7161225 is 5221617.

It is not a de Polignac number, because 7161225 - 2¹ = 7161223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7161195 and 7161204.

It is not an unprimeable number, because it can be changed into a prime (7161223) 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 11 ways as a sum of consecutive naturals, for example, 47667 + ... + 47816.

It is an arithmetic number, because the mean of its divisors is an integer number (986668).

Almost surely, 2^7161225 is an apocalyptic number.

7161225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7161225 is a deficient number, since it is larger than the sum of its proper divisors (4678791).

7161225 is a wasteful number, since it uses less digits than its factorization.

7161225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95496 (or 95491 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 7161225 is about 2676.0465242592. The cubic root of 7161225 is about 192.7506152820.

The spelling of 7161225 in words is "seven million, one hundred sixty-one thousand, two hundred twenty-five".