425221044 has 24 divisors (see below), whose sum is σ = 993743520. Its totient is φ = 141517344.

The previous prime is 425221037. The next prime is 425221063. The reversal of 425221044 is 440122524.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19839 + ... + 35270.

It is an arithmetic number, because the mean of its divisors is an integer number (41405980).

Almost surely, 2^425221044 is an apocalyptic number.

It is an amenable number.

425221044 is an abundant number, since it is smaller than the sum of its proper divisors (568522476).

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

425221044 is a wasteful number, since it uses less digits than its factorization.

425221044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55759 (or 55757 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 425221044 is about 20620.8885356572. Note that the first 3 decimals coincide. The cubic root of 425221044 is about 751.9776216556.

Adding to 425221044 its reverse (440122524), we get a palindrome (865343568).

The spelling of 425221044 in words is "four hundred twenty-five million, two hundred twenty-one thousand, forty-four".