425311644 has 96 divisors (see below), whose sum is σ = 1082108160. Its totient is φ = 129512448.

The previous prime is 425311643. The next prime is 425311657. The reversal of 425311644 is 446113524.

It is a super-3 number, since 3×425311644³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425311643) 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 31 ways as a sum of consecutive naturals, for example, 1502727 + ... + 1503009.

It is an arithmetic number, because the mean of its divisors is an integer number (11271960).

Almost surely, 2^425311644 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 425311644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541054080).

425311644 is an abundant number, since it is smaller than the sum of its proper divisors (656796516).

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

425311644 is a wasteful number, since it uses less digits than its factorization.

425311644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 497 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 425311644 is about 20623.0852202089. The cubic root of 425311644 is about 752.0310247310.

The spelling of 425311644 in words is "four hundred twenty-five million, three hundred eleven thousand, six hundred forty-four".