1216125 has 48 divisors (see below), whose sum is σ = 2336256. Its totient is φ = 607200.

The previous prime is 1216123. The next prime is 1216147. The reversal of 1216125 is 5216121.

It is not a de Polignac number, because 1216125 - 2¹ = 1216123 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1216098 and 1216107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25852 + ... + 25898.

It is an arithmetic number, because the mean of its divisors is an integer number (48672).

2^1216125 is an apocalyptic number.

1216125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1216125 is a deficient number, since it is larger than the sum of its proper divisors (1120131).

1216125 is a wasteful number, since it uses less digits than its factorization.

1216125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 78 counting only the distinct ones).

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

The square root of 1216125 is about 1102.7805765428. The cubic root of 1216125 is about 106.7397231723.

The spelling of 1216125 in words is "one million, two hundred sixteen thousand, one hundred twenty-five".