1247225 has 12 divisors (see below), whose sum is σ = 1767744. Its totient is φ = 855120.

The previous prime is 1247209. The next prime is 1247231. The reversal of 1247225 is 5227421.

It is a happy number.

It is not a de Polignac number, because 1247225 - 2⁴ = 1247209 is a prime.

It is a d-powerful number, because it can be written as 1 + 2⁴ + 4² + 7⁷ + 2⁸ + 2¹⁵ + 5⁸ .

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1247225.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3389 + ... + 3738.

It is an arithmetic number, because the mean of its divisors is an integer number (147312).

2^1247225 is an apocalyptic number.

It is an amenable number.

1247225 is a deficient number, since it is larger than the sum of its proper divisors (520519).

1247225 is an equidigital number, since it uses as much as digits as its factorization.

1247225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7144 (or 7139 counting only the distinct ones).

The product of its digits is 1120, while the sum is 23.

The square root of 1247225 is about 1116.7922814920. The cubic root of 1247225 is about 107.6419613568.

The spelling of 1247225 in words is "one million, two hundred forty-seven thousand, two hundred twenty-five".