425439481 has 4 divisors (see below), whose sum is σ = 431789392. Its totient is φ = 419089572.

The previous prime is 425439439. The next prime is 425439499. The reversal of 425439481 is 184934524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 425439481 - 2⁷ = 425439353 is a prime.

It is a super-2 number, since 2×425439481² = 361997503987098722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425439181) 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 3 ways as a sum of consecutive naturals, for example, 3174855 + ... + 3174988.

It is an arithmetic number, because the mean of its divisors is an integer number (107947348).

Almost surely, 2^425439481 is an apocalyptic number.

It is an amenable number.

425439481 is a deficient number, since it is larger than the sum of its proper divisors (6349911).

425439481 is an equidigital number, since it uses as much as digits as its factorization.

425439481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6349910.

The product of its digits is 138240, while the sum is 40.

The square root of 425439481 is about 20626.1843538741. The cubic root of 425439481 is about 752.1063638077.

The spelling of 425439481 in words is "four hundred twenty-five million, four hundred thirty-nine thousand, four hundred eighty-one".