7872225 has 24 divisors (see below), whose sum is σ = 13323552. Its totient is φ = 4099200.

The previous prime is 7872223. The next prime is 7872239. The reversal of 7872225 is 5222787.

7872225 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7872225 - 2¹ = 7872223 is a prime.

It is a d-powerful number, because it can be written as 7 + 8⁴ + 7⁸ + 2¹¹ + 2¹² + 2²¹ + 5² .

It is not an unprimeable number, because it can be changed into a prime (7872223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2005 + ... + 4445.

It is an arithmetic number, because the mean of its divisors is an integer number (555148).

Almost surely, 2^7872225 is an apocalyptic number.

7872225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7872225 is a deficient number, since it is larger than the sum of its proper divisors (5451327).

7872225 is a wasteful number, since it uses less digits than its factorization.

7872225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497 (or 2492 counting only the distinct ones).

The product of its digits is 15680, while the sum is 33.

The square root of 7872225 is about 2805.7485632180. The cubic root of 7872225 is about 198.9294885832.

The spelling of 7872225 in words is "seven million, eight hundred seventy-two thousand, two hundred twenty-five".