1225830 has 32 divisors (see below), whose sum is σ = 3045600. Its totient is φ = 315392.

The previous prime is 1225817. The next prime is 1225849. The reversal of 1225830 is 385221.

It is a junction number, because it is equal to n+sod(n) for n = 1225797 and 1225806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166 + ... + 1574.

It is an arithmetic number, because the mean of its divisors is an integer number (95175).

2^1225830 is an apocalyptic number.

1225830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1522800).

1225830 is an abundant number, since it is smaller than the sum of its proper divisors (1819770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225830 is a wasteful number, since it uses less digits than its factorization.

1225830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1225830 is about 1107.1720733472. The cubic root of 1225830 is about 107.0229083044.

The spelling of 1225830 in words is "one million, two hundred twenty-five thousand, eight hundred thirty".