1025663803 has 4 divisors (see below), whose sum is σ = 1035621808. Its totient is φ = 1015705800.

The previous prime is 1025663783. The next prime is 1025663813. The reversal of 1025663803 is 3083665201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025663803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025663813) 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, 4978848 + ... + 4979053.

It is an arithmetic number, because the mean of its divisors is an integer number (258905452).

Almost surely, 2^1025663803 is an apocalyptic number.

1025663803 is a deficient number, since it is larger than the sum of its proper divisors (9958005).

1025663803 is an equidigital number, since it uses as much as digits as its factorization.

1025663803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9958004.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1025663803 is about 32025.9863704461. The cubic root of 1025663803 is about 1008.4824456728.

The spelling of 1025663803 in words is "one billion, twenty-five million, six hundred sixty-three thousand, eight hundred three".