1211025 has 24 divisors (see below), whose sum is σ = 2040544. Its totient is φ = 633600.

The previous prime is 1210999. The next prime is 1211027. The reversal of 1211025 is 5201121.

It is not a de Polignac number, because 1211025 - 2⁷ = 1210897 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211025.

It is not an unprimeable number, because it can be changed into a prime (1211027) 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, 4905 + ... + 5145.

2^1211025 is an apocalyptic number.

1211025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1211025 is a deficient number, since it is larger than the sum of its proper divisors (829519).

1211025 is a wasteful number, since it uses less digits than its factorization.

1211025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1211025 is about 1100.4658104639. The cubic root of 1211025 is about 106.5903045037.

Adding to 1211025 its reverse (5201121), we get a palindrome (6412146).

The spelling of 1211025 in words is "one million, two hundred eleven thousand, twenty-five".