425630044 has 24 divisors (see below), whose sum is σ = 855306368. Its totient is φ = 181545840.

The previous prime is 425630027. The next prime is 425630047. The reversal of 425630044 is 440036524.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 425629994 and 425630021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425630047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30114 + ... + 41929.

Almost surely, 2^425630044 is an apocalyptic number.

It is an amenable number.

425630044 is an abundant number, since it is smaller than the sum of its proper divisors (429676324).

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

425630044 is a wasteful number, since it uses less digits than its factorization.

425630044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72265 (or 72263 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 425630044 is about 20630.8032805318. The cubic root of 425630044 is about 752.2186416267.

Adding to 425630044 its reverse (440036524), we get a palindrome (865666568).

The spelling of 425630044 in words is "four hundred twenty-five million, six hundred thirty thousand, forty-four".