425128398 has 16 divisors (see below), whose sum is σ = 864196176. Its totient is φ = 139386240.

The previous prime is 425128397. The next prime is 425128411. The reversal of 425128398 is 893821524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425128391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580411 + ... + 581142.

It is an arithmetic number, because the mean of its divisors is an integer number (54012261).

Almost surely, 2^425128398 is an apocalyptic number.

425128398 is an abundant number, since it is smaller than the sum of its proper divisors (439067778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425128398 is a wasteful number, since it uses less digits than its factorization.

425128398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161619.

The product of its digits is 138240, while the sum is 42.

The square root of 425128398 is about 20618.6420018390. The cubic root of 425128398 is about 751.9230047452.

The spelling of 425128398 in words is "four hundred twenty-five million, one hundred twenty-eight thousand, three hundred ninety-eight".