1225503 has 8 divisors (see below), whose sum is σ = 1815600. Its totient is φ = 816984.

The previous prime is 1225501. The next prime is 1225507. The reversal of 1225503 is 3055221.

It is a happy number.

It is not a de Polignac number, because 1225503 - 2¹ = 1225501 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225501) 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, 22668 + ... + 22721.

It is an arithmetic number, because the mean of its divisors is an integer number (226950).

2^1225503 is an apocalyptic number.

1225503 is a deficient number, since it is larger than the sum of its proper divisors (590097).

1225503 is an equidigital number, since it uses as much as digits as its factorization.

1225503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45398 (or 45392 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1225503 is about 1107.0243899752. The cubic root of 1225503 is about 107.0133910512.

It can be divided in two parts, 1225 and 503, that added together give a cube (1728 = 12³).

The spelling of 1225503 in words is "one million, two hundred twenty-five thousand, five hundred three".