428494425 has 12 divisors (see below), whose sum is σ = 708444240. Its totient is φ = 228530320.

The previous prime is 428494421. The next prime is 428494433. The reversal of 428494425 is 524494824.

It is not a de Polignac number, because 428494425 - 2² = 428494421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428494421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2856555 + ... + 2856704.

It is an arithmetic number, because the mean of its divisors is an integer number (59037020).

Almost surely, 2^428494425 is an apocalyptic number.

It is an amenable number.

428494425 is a deficient number, since it is larger than the sum of its proper divisors (279949815).

428494425 is a wasteful number, since it uses less digits than its factorization.

428494425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5713272 (or 5713267 counting only the distinct ones).

The product of its digits is 368640, while the sum is 42.

The square root of 428494425 is about 20700.1068837820. The cubic root of 428494425 is about 753.9022832556.

It can be divided in two parts, 42849 and 4425, that added together give a palindrome (47274).

The spelling of 428494425 in words is "four hundred twenty-eight million, four hundred ninety-four thousand, four hundred twenty-five".