1225435503 has 4 divisors (see below), whose sum is σ = 1633914008. Its totient is φ = 816957000.

The previous prime is 1225435501. The next prime is 1225435507. The reversal of 1225435503 is 3055345221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1225435503 - 2¹ = 1225435501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225435501) 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, 204239248 + ... + 204239253.

It is an arithmetic number, because the mean of its divisors is an integer number (408478502).

Almost surely, 2^1225435503 is an apocalyptic number.

1225435503 is a deficient number, since it is larger than the sum of its proper divisors (408478505).

1225435503 is an equidigital number, since it uses as much as digits as its factorization.

1225435503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408478504.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 1225435503 is about 35006.2209185739. The cubic root of 1225435503 is about 1070.1142635713.

It can be divided in two parts, 122 and 5435503, that multiplied together give a palindrome (663131366).

The spelling of 1225435503 in words is "one billion, two hundred twenty-five million, four hundred thirty-five thousand, five hundred three".