425530405 has 8 divisors (see below), whose sum is σ = 511925112. Its totient is φ = 339565248.

The previous prime is 425530393. The next prime is 425530409. The reversal of 425530405 is 504035524.

It can be written as a sum of positive squares in 4 ways, for example, as 217680516 + 207849889 = 14754^2 + 14417^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425530405 is a prime.

It is a super-2 number, since 2×425530405² = 362152251158928050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425530409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105202 + ... + 109171.

It is an arithmetic number, because the mean of its divisors is an integer number (63990639).

Almost surely, 2^425530405 is an apocalyptic number.

It is an amenable number.

425530405 is a deficient number, since it is larger than the sum of its proper divisors (86394707).

425530405 is a wasteful number, since it uses less digits than its factorization.

425530405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214775.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 425530405 is about 20628.3883277390. The cubic root of 425530405 is about 752.1599395029.

Adding to 425530405 its reverse (504035524), we get a palindrome (929565929).

The spelling of 425530405 in words is "four hundred twenty-five million, five hundred thirty thousand, four hundred five".