425420431 has 8 divisors (see below), whose sum is σ = 448830720. Its totient is φ = 402112152.

The previous prime is 425420423. The next prime is 425420449. The reversal of 425420431 is 134024524.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425420431 - 2³ = 425420423 is a prime.

It is a super-2 number, since 2×425420431² = 361965086224451522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425420396 and 425420405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425420491) 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 7 ways as a sum of consecutive naturals, for example, 16855 + ... + 33688.

It is an arithmetic number, because the mean of its divisors is an integer number (56103840).

Almost surely, 2^425420431 is an apocalyptic number.

425420431 is a deficient number, since it is larger than the sum of its proper divisors (23410289).

425420431 is a wasteful number, since it uses less digits than its factorization.

425420431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51005.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 425420431 is about 20625.7225570403. The cubic root of 425420431 is about 752.0951378944.

Adding to 425420431 its reverse (134024524), we get a palindrome (559444955).

The spelling of 425420431 in words is "four hundred twenty-five million, four hundred twenty thousand, four hundred thirty-one".