1225901 has 4 divisors (see below), whose sum is σ = 1252032. Its totient is φ = 1199772.

The previous prime is 1225897. The next prime is 1225907. The reversal of 1225901 is 1095221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1225901 - 2² = 1225897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12995 + ... + 13088.

It is an arithmetic number, because the mean of its divisors is an integer number (313008).

2^1225901 is an apocalyptic number.

It is an amenable number.

1225901 is a deficient number, since it is larger than the sum of its proper divisors (26131).

1225901 is an equidigital number, since it uses as much as digits as its factorization.

1225901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26130.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1225901 is about 1107.2041365530. The cubic root of 1225901 is about 107.0249745180.

The spelling of 1225901 in words is "one million, two hundred twenty-five thousand, nine hundred one".