1225601 has 8 divisors (see below), whose sum is σ = 1377600. Its totient is φ = 1081872.

The previous prime is 1225591. The next prime is 1225603. The reversal of 1225601 is 1065221.

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

It is a cyclic number.

It is not a de Polignac number, because 1225601 - 2¹⁰ = 1224577 is a prime.

It is a super-2 number, since 2×1225601² = 3004195622402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225601.

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 7 ways as a sum of consecutive naturals, for example, 1751 + ... + 2348.

It is an arithmetic number, because the mean of its divisors is an integer number (172200).

2^1225601 is an apocalyptic number.

It is an amenable number.

1225601 is a deficient number, since it is larger than the sum of its proper divisors (151999).

1225601 is a wasteful number, since it uses less digits than its factorization.

1225601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4135.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1225601 is about 1107.0686518911. The cubic root of 1225601 is about 107.0162434943.

The spelling of 1225601 in words is "one million, two hundred twenty-five thousand, six hundred one".