1225203 has 16 divisors (see below), whose sum is σ = 1913856. Its totient is φ = 682560.

The previous prime is 1225183. The next prime is 1225219. The reversal of 1225203 is 3025221.

It is not a de Polignac number, because 1225203 - 2¹⁷ = 1094131 is a prime.

It is a super-2 number, since 2×1225203² = 3002244782418, which contains 22 as substring.

1225203 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1225223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150 + ... + 1572.

It is an arithmetic number, because the mean of its divisors is an integer number (119616).

2^1225203 is an apocalyptic number.

1225203 is a deficient number, since it is larger than the sum of its proper divisors (688653).

1225203 is a wasteful number, since it uses less digits than its factorization.

1225203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474.

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

The square root of 1225203 is about 1106.8888833121. Note that the first 5 decimals coincide. The cubic root of 1225203 is about 107.0046581371.

The spelling of 1225203 in words is "one million, two hundred twenty-five thousand, two hundred three".