1025305603 has 4 divisors (see below), whose sum is σ = 1171777840. Its totient is φ = 878833368.

The previous prime is 1025305591. The next prime is 1025305621. The reversal of 1025305603 is 3065035201.

It is a happy number.

1025305603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1025305603 - 2⁵ = 1025305571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025305663) 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, 73236108 + ... + 73236121.

It is an arithmetic number, because the mean of its divisors is an integer number (292944460).

Almost surely, 2^1025305603 is an apocalyptic number.

1025305603 is a deficient number, since it is larger than the sum of its proper divisors (146472237).

1025305603 is an equidigital number, since it uses as much as digits as its factorization.

1025305603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146472236.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 1025305603 is about 32020.3935484872. The cubic root of 1025305603 is about 1008.3650321266.

The spelling of 1025305603 in words is "one billion, twenty-five million, three hundred five thousand, six hundred three".