1225606 has 8 divisors (see below), whose sum is σ = 1861920. Its totient is φ = 604968.

The previous prime is 1225603. The next prime is 1225621. The reversal of 1225606 is 6065221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1225606³ = 5522985333194535048, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3721 + ... + 4036.

It is an arithmetic number, because the mean of its divisors is an integer number (232740).

2^1225606 is an apocalyptic number.

1225606 is a deficient number, since it is larger than the sum of its proper divisors (636314).

1225606 is an equidigital number, since it uses as much as digits as its factorization.

1225606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7838.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1225606 is about 1107.0709101047. The cubic root of 1225606 is about 107.0163890231.

The spelling of 1225606 in words is "one million, two hundred twenty-five thousand, six hundred six".