425144423 has 4 divisors (see below), whose sum is σ = 463793928. Its totient is φ = 386494920.

The previous prime is 425144407. The next prime is 425144477. The reversal of 425144423 is 324441524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 425144423 - 2⁴ = 425144407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425144623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19324736 + ... + 19324757.

It is an arithmetic number, because the mean of its divisors is an integer number (115948482).

Almost surely, 2^425144423 is an apocalyptic number.

425144423 is a deficient number, since it is larger than the sum of its proper divisors (38649505).

425144423 is a wasteful number, since it uses less digits than its factorization.

425144423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38649504.

The product of its digits is 15360, while the sum is 29.

The square root of 425144423 is about 20619.0306028193. The cubic root of 425144423 is about 751.9324524123.

Adding to 425144423 its reverse (324441524), we get a palindrome (749585947).

The spelling of 425144423 in words is "four hundred twenty-five million, one hundred forty-four thousand, four hundred twenty-three".