1225251 has 6 divisors (see below), whose sum is σ = 1769820. Its totient is φ = 816828.

The previous prime is 1225223. The next prime is 1225261. The reversal of 1225251 is 1525221.

It is not a de Polignac number, because 1225251 - 2⁵ = 1225219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68061 + ... + 68078.

It is an arithmetic number, because the mean of its divisors is an integer number (294970).

2^1225251 is an apocalyptic number.

1225251 is a deficient number, since it is larger than the sum of its proper divisors (544569).

1225251 is a wasteful number, since it uses less digits than its factorization.

1225251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136145 (or 136142 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 1225251 is about 1106.9105654930. The cubic root of 1225251 is about 107.0060554991.

The spelling of 1225251 in words is "one million, two hundred twenty-five thousand, two hundred fifty-one".