1225149 has 8 divisors (see below), whose sum is σ = 1668480. Its totient is φ = 799296.

The previous prime is 1225129. The next prime is 1225153. The reversal of 1225149 is 9415221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225149 - 2⁵ = 1225117 is a prime.

1225149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4204 + ... + 4485.

It is an arithmetic number, because the mean of its divisors is an integer number (208560).

2^1225149 is an apocalyptic number.

It is an amenable number.

1225149 is a deficient number, since it is larger than the sum of its proper divisors (443331).

1225149 is an equidigital number, since it uses as much as digits as its factorization.

1225149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8739.

The product of its digits is 720, while the sum is 24.

The square root of 1225149 is about 1106.8644903510. The cubic root of 1225149 is about 107.0030860612.

The spelling of 1225149 in words is "one million, two hundred twenty-five thousand, one hundred forty-nine".