1225071 has 24 divisors (see below), whose sum is σ = 1940240. Its totient is φ = 763776.

The previous prime is 1225067. The next prime is 1225073. The reversal of 1225071 is 1705221.

It is not a de Polignac number, because 1225071 - 2² = 1225067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7725 + ... + 7881.

2^1225071 is an apocalyptic number.

1225071 is a deficient number, since it is larger than the sum of its proper divisors (715169).

1225071 is a wasteful number, since it uses less digits than its factorization.

1225071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 1225071 is about 1106.8292551247. The cubic root of 1225071 is about 107.0008152033. Note that the first 3 decimals are identical.

It can be divided in two parts, 12250 and 71, that added together give a palindrome (12321).

The spelling of 1225071 in words is "one million, two hundred twenty-five thousand, seventy-one".