425212416 has 100 divisors (see below), whose sum is σ = 1269270882. Its totient is φ = 141723648.

The previous prime is 425212393. The next prime is 425212421. The reversal of 425212416 is 614212524.

It can be written as a sum of positive squares in only one way, i.e., 412252416 + 12960000 = 20304^2 + 3600^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 425212416.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 36346 + ... + 46598.

Almost surely, 2^425212416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425212416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634635441).

425212416 is an abundant number, since it is smaller than the sum of its proper divisors (844058466).

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

425212416 is an equidigital number, since it uses as much as digits as its factorization.

425212416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10283 (or 10258 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 425212416 is about 20620.6793292559. The cubic root of 425212416 is about 751.9725355897.

The spelling of 425212416 in words is "four hundred twenty-five million, two hundred twelve thousand, four hundred sixteen".