428197425 has 12 divisors (see below), whose sum is σ = 707953200. Its totient is φ = 228371920.

The previous prime is 428197409. The next prime is 428197439. The reversal of 428197425 is 524791824.

It is not a de Polignac number, because 428197425 - 2⁴ = 428197409 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2854575 + ... + 2854724.

It is an arithmetic number, because the mean of its divisors is an integer number (58996100).

Almost surely, 2^428197425 is an apocalyptic number.

It is an amenable number.

428197425 is a deficient number, since it is larger than the sum of its proper divisors (279755775).

428197425 is a wasteful number, since it uses less digits than its factorization.

428197425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709312 (or 5709307 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 428197425 is about 20692.9317642523. The cubic root of 428197425 is about 753.7280602730.

The spelling of 428197425 in words is "four hundred twenty-eight million, one hundred ninety-seven thousand, four hundred twenty-five".