1226725 has 6 divisors (see below), whose sum is σ = 1521170. Its totient is φ = 981360.

The previous prime is 1226713. The next prime is 1226741. The reversal of 1226725 is 5276221.

It can be written as a sum of positive squares in 3 ways, for example, as 12321 + 1214404 = 111^2 + 1102^2 .

It is not a de Polignac number, because 1226725 - 2⁹ = 1226213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 49069 = 1226725 / (1 + 2 + 2 + 6 + 7 + 2 + 5).

It is a d-powerful number, because it can be written as 1 + 2¹⁴ + 2¹⁶ + 6⁴ + 7⁵ + 2²⁰ + 5⁷ .

1226725 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1226725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24510 + ... + 24559.

2^1226725 is an apocalyptic number.

It is an amenable number.

1226725 is a deficient number, since it is larger than the sum of its proper divisors (294445).

1226725 is an equidigital number, since it uses as much as digits as its factorization.

1226725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49079 (or 49074 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 1226725 is about 1107.5761824814. The cubic root of 1226725 is about 107.0489484026.

The spelling of 1226725 in words is "one million, two hundred twenty-six thousand, seven hundred twenty-five".