1011225 has 24 divisors (see below), whose sum is σ = 1701280. Its totient is φ = 529920.

The previous prime is 1011221. The next prime is 1011229. The reversal of 1011225 is 5221101.

It is an interprime number because it is at equal distance from previous prime (1011221) and next prime (1011229).

It is not a de Polignac number, because 1011225 - 2² = 1011221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011225.

It is not an unprimeable number, because it can be changed into a prime (1011221) 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, 7206 + ... + 7344.

2^1011225 is an apocalyptic number.

1011225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011225 is a deficient number, since it is larger than the sum of its proper divisors (690055).

1011225 is a wasteful number, since it uses less digits than its factorization.

1011225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 244 counting only the distinct ones).

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

The square root of 1011225 is about 1005.5968377039. The cubic root of 1011225 is about 100.3727753255.

Adding to 1011225 its reverse (5221101), we get a palindrome (6232326).

It can be divided in two parts, 1011 and 225, that multiplied together give a triangular number (227475 = T₆₇₄).

The spelling of 1011225 in words is "one million, eleven thousand, two hundred twenty-five".