425544636 has 48 divisors (see below), whose sum is σ = 1084970880. Its totient is φ = 128742720.

The previous prime is 425544619. The next prime is 425544751. The reversal of 425544636 is 636445524.

It is a junction number, because it is equal to n+sod(n) for n = 425544594 and 425544603.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 91315 + ... + 95861.

It is an arithmetic number, because the mean of its divisors is an integer number (22603560).

Almost surely, 2^425544636 is an apocalyptic number.

It is an amenable number.

425544636 is an abundant number, since it is smaller than the sum of its proper divisors (659426244).

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

425544636 is a wasteful number, since it uses less digits than its factorization.

425544636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5274 (or 5272 counting only the distinct ones).

The product of its digits is 345600, while the sum is 39.

The square root of 425544636 is about 20628.7332621274. The cubic root of 425544636 is about 752.1683242299.

The spelling of 425544636 in words is "four hundred twenty-five million, five hundred forty-four thousand, six hundred thirty-six".