7146225 has 30 divisors (see below), whose sum is σ = 13241030. Its totient is φ = 3810240.

The previous prime is 7146203. The next prime is 7146241. The reversal of 7146225 is 5226417.

7146225 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1296 + 7144929 = 36^2 + 2673^2 .

It is not a de Polignac number, because 7146225 - 2⁵ = 7146193 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

7146225 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 261 + ... + 3789.

Almost surely, 2^7146225 is an apocalyptic number.

7146225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7146225 is a deficient number, since it is larger than the sum of its proper divisors (6094805).

7146225 is a wasteful number, since it uses less digits than its factorization.

7146225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551 (or 3537 counting only the distinct ones).

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

The square root of 7146225 is about 2673.2424132502. The cubic root of 7146225 is about 192.6159418487.

The spelling of 7146225 in words is "seven million, one hundred forty-six thousand, two hundred twenty-five".