8203428025 has 24 divisors (see below), whose sum is σ = 10964289560. Its totient is φ = 6052631040.

The previous prime is 8203428001. The next prime is 8203428083. The reversal of 8203428025 is 5208243028.

It is a happy number.

8203428025 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 6839455401 + 1363972624 = 82701^2 + 36932^2 .

It is not a de Polignac number, because 8203428025 - 2¹⁷ = 8203296953 is a prime.

It is a super-2 number, since 2×8203428025² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 383821 + ... + 404629.

Almost surely, 2^8203428025 is an apocalyptic number.

It is an amenable number.

8203428025 is a deficient number, since it is larger than the sum of its proper divisors (2760861535).

8203428025 is a wasteful number, since it uses less digits than its factorization.

8203428025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22045 (or 22040 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 8203428025 is about 90572.7775051643. Note that the first 3 decimals coincide. The cubic root of 8203428025 is about 2016.8106407089.

The spelling of 8203428025 in words is "eight billion, two hundred three million, four hundred twenty-eight thousand, twenty-five".