1220325 has 24 divisors (see below), whose sum is σ = 2062368. Its totient is φ = 636480.

The previous prime is 1220309. The next prime is 1220327. The reversal of 1220325 is 5230221.

It is not a de Polignac number, because 1220325 - 2⁴ = 1220309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220327) 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, 3822 + ... + 4128.

It is an arithmetic number, because the mean of its divisors is an integer number (85932).

2^1220325 is an apocalyptic number.

1220325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220325 is a deficient number, since it is larger than the sum of its proper divisors (842043).

1220325 is a wasteful number, since it uses less digits than its factorization.

1220325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1220325 is about 1104.6832125094. The cubic root of 1220325 is about 106.8624604829.

Adding to 1220325 its reverse (5230221), we get a palindrome (6450546).

The spelling of 1220325 in words is "one million, two hundred twenty thousand, three hundred twenty-five".