1225487603 has 4 divisors (see below), whose sum is σ = 1227347880. Its totient is φ = 1223627328.

The previous prime is 1225487591. The next prime is 1225487609. The reversal of 1225487603 is 3067845221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1225487603 - 2²⁸ = 957052147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225487609) 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, 929150 + ... + 930467.

It is an arithmetic number, because the mean of its divisors is an integer number (306836970).

Almost surely, 2^1225487603 is an apocalyptic number.

1225487603 is a deficient number, since it is larger than the sum of its proper divisors (1860277).

1225487603 is an equidigital number, since it uses as much as digits as its factorization.

1225487603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860276.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1225487603 is about 35006.9650641126. The cubic root of 1225487603 is about 1070.1294288364.

The spelling of 1225487603 in words is "one billion, two hundred twenty-five million, four hundred eighty-seven thousand, six hundred three".