1225412 has 12 divisors (see below), whose sum is σ = 2170896. Its totient is φ = 605160.

The previous prime is 1225409. The next prime is 1225459. The reversal of 1225412 is 2145221.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1514 + ... + 2177.

It is an arithmetic number, because the mean of its divisors is an integer number (180908).

2^1225412 is an apocalyptic number.

It is an amenable number.

1225412 is a deficient number, since it is larger than the sum of its proper divisors (945484).

1225412 is a wasteful number, since it uses less digits than its factorization.

1225412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778 (or 3776 counting only the distinct ones).

The product of its digits is 160, while the sum is 17.

The square root of 1225412 is about 1106.9832880401. The cubic root of 1225412 is about 107.0107422179.

Subtracting from 1225412 its sum of digits (17), we obtain a triangular number (1225395 = T₁₅₆₅).

The spelling of 1225412 in words is "one million, two hundred twenty-five thousand, four hundred twelve".