428283025 has 9 divisors (see below), whose sum is σ = 531199291. Its totient is φ = 342543640.

The previous prime is 428283017. The next prime is 428283077. The reversal of 428283025 is 520382824.

It is a happy number.

The square root of 428283025 is 20695.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 154181889 + 274101136 = 12417^2 + 16556^2 .

It is not a de Polignac number, because 428283025 - 2³ = 428283017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 101406 + ... + 105544.

Almost surely, 2^428283025 is an apocalyptic number.

428283025 is the 20695-th square number.

428283025 is the 10348-th centered octagonal number.

It is an amenable number.

428283025 is a deficient number, since it is larger than the sum of its proper divisors (102916266).

428283025 is an frugal number, since it uses more digits than its factorization.

428283025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8288 (or 4144 counting only the distinct ones).

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

The cubic root of 428283025 is about 753.7782822963.

The spelling of 428283025 in words is "four hundred twenty-eight million, two hundred eighty-three thousand, twenty-five".