425620340 has 12 divisors (see below), whose sum is σ = 893802756. Its totient is φ = 170248128.

The previous prime is 425620337. The next prime is 425620343. The reversal of 425620340 is 43026524.

It is an interprime number because it is at equal distance from previous prime (425620337) and next prime (425620343).

It can be written as a sum of positive squares in 2 ways, for example, as 63936016 + 361684324 = 7996^2 + 19018^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425620343) 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, 10640489 + ... + 10640528.

It is an arithmetic number, because the mean of its divisors is an integer number (74483563).

Almost surely, 2^425620340 is an apocalyptic number.

It is an amenable number.

425620340 is an abundant number, since it is smaller than the sum of its proper divisors (468182416).

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

425620340 is a wasteful number, since it uses less digits than its factorization.

425620340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21281026 (or 21281024 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 425620340 is about 20630.5680968799. The cubic root of 425620340 is about 752.2129249366.

Adding to 425620340 its reverse (43026524), we get a palindrome (468646864).

The spelling of 425620340 in words is "four hundred twenty-five million, six hundred twenty thousand, three hundred forty".