428914625 has 8 divisors (see below), whose sum is σ = 535285608. Its totient is φ = 343131600.

The previous prime is 428914597. The next prime is 428914627. The reversal of 428914625 is 526419824.

It can be written as a sum of positive squares in 4 ways, for example, as 95961616 + 332953009 = 9796^2 + 18247^2 .

It is not a de Polignac number, because 428914625 - 2¹⁰ = 428913601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428914627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1715534 + ... + 1715783.

It is an arithmetic number, because the mean of its divisors is an integer number (66910701).

Almost surely, 2^428914625 is an apocalyptic number.

It is an amenable number.

428914625 is a deficient number, since it is larger than the sum of its proper divisors (106370983).

428914625 is an equidigital number, since it uses as much as digits as its factorization.

428914625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431332 (or 3431322 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 428914625 is about 20710.2541027386. The cubic root of 428914625 is about 754.1486390422.

The spelling of 428914625 in words is "four hundred twenty-eight million, nine hundred fourteen thousand, six hundred twenty-five".