1225116 has 18 divisors (see below), whose sum is σ = 3096912. Its totient is φ = 408360.

The previous prime is 1225111. The next prime is 1225117. The reversal of 1225116 is 6115221.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225111) 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, 16980 + ... + 17051.

2^1225116 is an apocalyptic number.

It is an amenable number.

1225116 is an abundant number, since it is smaller than the sum of its proper divisors (1871796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225116 is a wasteful number, since it uses less digits than its factorization.

1225116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34041 (or 34036 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 1225116 is about 1106.8495832768. The cubic root of 1225116 is about 107.0021253254.

The spelling of 1225116 in words is "one million, two hundred twenty-five thousand, one hundred sixteen".